Testimonial Grid brake with every change on the page

Hi!
I’m using the testimonial grid on a page I’m building and when I put it in, it worked. But with every change on the page, it gets blown up and only the code shows. If I go back in and save it again (without making changes), it is correct again but once I change anything on the page, it gets destroyed again.
Can someone help?

When it blows up, it shows the code on the page such as this – instead of the testimonial grid:

„Annika hat eine sehr angenehme Art und eine ganz besondere Stimme, die mir viel Sicherheit gegeben hat, um tief in meine Prozesse einzutauchen und gleichzeitig die Verbindung zu den anderen Frauen zu halten. Der Raum war so liebevoll gestaltet von der Ankunft bis zum Abschied – ich habe mich sehr willkommen gefühlt <3.” [/av_testimonial_single] [av_testimonial_single src='3521' name='' subtitle='' link='http://' linktext='' av_uid='av-ld7s48ye' sc_version='1.0'] “Es schwang eine liebevolle Energie durch den Raum, die uns den Raum hielt echt zu sein und uns völlig offen mit all unseren Gefühlen, Gedanken und Aspekten zu zeigen.” [/av_testimonial_single] [av_testimonial_single src='3519' name='' subtitle='' link='http://' linktext='' av_uid='av-ld7s4ock' sc_version='1.0'] “Der Frauenzirkel war einfach magisch und die Tiefe dieses Raums war soooo erfüllend. Liebe Annika, danke für die Sicherheit, die du in den Raum gegeben hast: ich fühlte eine nährende Verbundenheit, die ich sonst nicht so schnell verspüre.” [/av_testimonial_single] [av_testimonial_single src='3520' name='' subtitle='' link='http://' linktext='' av_uid='av-ld7s579l' sc_version='1.0'] “Sehr fein, fast magisch. Es war ein wertschätzender, angenehm vertrauter Rahmen für Frauen mit allen unterschiedlichen Anliegen, die alle einen Raum haben dürfen.” [/av_testimonial_single] [av_testimonial_single src='3522' name='' subtitle='' link='http://' linktext='' av_uid='av-ld7s5n07' sc_version='1.0'] “Der Zirkel hätte noch ewig weitergehen können :) ” [/av_testimonial_single] [/av_testimonials] [/av_one_full] [av_one_full first min_height='' vertical_alignment='av-align-top' space='' row_boxshadow='' row_boxshadow_width='10' row_boxshadow_color='' custom_margin='' margin='0px' av-desktop-margin='' av-medium-margin='' av-small-margin='' av-mini-margin='' mobile_breaking='' mobile_column_order='' border='' border_style='solid' border_color='' radius='' min_col_height='' padding='' av-desktop-padding='' av-medium-padding='' av-small-padding='' av-mini-padding='' svg_div_top='' svg_div_top_color='#333333' svg_div_top_width='100' svg_div_top_height='50' svg_div_top_max_height='none' svg_div_top_flip='' svg_div_top_invert='' svg_div_top_front='' svg_div_top_opacity='' svg_div_top_preview='' svg_div_bottom='' svg_div_bottom_color='#333333' svg_div_bottom_width='100' svg_div_bottom_height='50' svg_div_bottom_max_height='none' svg_div_bottom_flip='' svg_div_bottom_invert='' svg_div_bottom_front='' svg_div_bottom_opacity='' svg_div_bottom_preview='' column_boxshadow='' column_boxshadow_width='10' column_boxshadow_color='' background='bg_color' background_color='' background_gradient_direction='vertical' background_gradient_color1='#000000' background_gradient_color2='#ffffff' background_gradient_color3='' src='' background_position='top left' background_repeat='no-repeat' highlight='' highlight_size='' animation='' animation_duration='' animation_custom_bg_color='' animation_z_index_curtain='100' parallax_parallax='' parallax_parallax_speed='' av-desktop-parallax_parallax='' av-desktop-parallax_parallax_speed='' av-medium-parallax_parallax='' av-medium-parallax_parallax_speed='' av-small-parallax_parallax='' av-small-parallax_parallax_speed='' av-mini-parallax_parallax='' av-mini-parallax_parallax_speed='' css_position='' css_position_location='' css_position_z_index='' av-desktop-css_position='' av-desktop-css_position_location='' av-desktop-css_position_z_index='' av-medium-css_position='' av-medium-css_position_location='' av-medium-css_position_z_index='' av-small-css_position='' av-small-css_position_location='' av-small-css_position_z_index='' av-mini-css_position='' av-mini-css_position_location='' av-mini-css_position_z_index='' link='' linktarget='' link_hover='' title_attr='' alt_attr='' mobile_display='' mobile_col_pos='0' id='' custom_class='' template_class='' aria_label='' av_uid='av-4l8ada' sc_version='1.0'] [av_promobox button='yes' label='Zu Gutschein' icon_select='no' icon='ue800' font='entypo-fontello' label_display='' color='custom' custom_bg='#7933aa' custom_font='#ffffff' size='large' box_color='' box_custom_font='#ffffff' box_custom_bg='#444444' box_custom_border='#333333' gradient_color_direction='vertical' gradient_color_1='#000000' gradient_color_2='#ffffff' gradient_color_3='' border_promo='' border_promo_width='' border_promo_width_sync='true' border_promo_color='' border_radius_promo='' border_radius_promo_sync='true' box_shadow_promo='' box_shadow_promo_style='0px,0px,0px,0px' box_shadow_promo_color='' link='manually,https://annikaschauf.de/s/annika-schauf/gutschein-frauenzirkel' link_target='_blank' hover_opacity='' sonar_promo_effect='' sonar_promo_color='' sonar_promo_duration='1' sonar_promo_scale='' sonar_promo_opac='0.5' id='' custom_class='' template_class='' av_uid='av-6kq0ou' sc_version='1.0' admin_preview_bg='']