Hi Günter,
I made a mistake and need to reformulate my thread subject. The FN microformat issue is not Enfold native, but from plugin WP Customer Reviews Lite.
However, the present Testimonial in Enfold can be improved. Please let me propose the following:

1) Fix present Enfold testimonial element to properly display all Schema value, namely PERSON + CREATIVEWORK (it is only showing PERSON on Google Schema Validation tool).

At present Enfold’s testimonial tags these items as PERSON+CREATIVEWORK, but the latter is not showing up.
IMO element CREATIVEWORK should contain element PERSON, not the other way round.
This is the code producing this PERSON+(not visible)CREATIVEWORK:

<section class="avia-testimonial-row" style="padding: 0px; height: 105px;">
	<div class="avia-testimonial av_one_half flex_column no_margin avia-testimonial-row-1 avia-first-testimonial avia_start_animation active-slide" itemscope="itemscope" itemtype="https://schema.org/Person" style="">
		<div class="avia-testimonial_inner">
			<div class="avia-testimonial-content " itemscope="itemscope" itemtype="https://schema.org/CreativeWork">
					<p>This is Tina’s testimonial content</p>
			</div>
			<div class="avia-testimonial-meta">
					<div class="avia-testimonial-arrow-wrap"><div class="avia-arrow"></div></div>
			<div class="avia-testimonial-meta-mini">
					<strong class="avia-testimonial-name" itemprop="name">Tina</strong>
					<span class="avia-testimonial-subtitle " itemprop="jobTitle">CMO</span>
					<span class="hidden avia-testimonial-markup-link" itemprop="url">http://www.tinasplace.io</span> – <a class="aviablank avia-testimonial-link" href="http://www.tinasplace.io" target="_blank">Tina’s Place</a>
</div></div></div></div>
</section>

This next code produces the valid semantics we expect from the previous code.
If you screen this through Google Schema validator tool, you should get 2 instances of CreativeWork, one (Microformat) is enfolding PERSON within CREATIVEWORK (as “author”) and second is a plain example of CREATIVEWORK using RDFa.
Validated 100%.

<section class="avia-testimonial-row" style="padding: 0px; height: 105px;">
	<div class="avia-testimonial av_one_half flex_column no_margin avia-testimonial-row-1 avia-first-testimonial avia_start_animation active-slide">
		<div class="avia-testimonial_inner">
			<div class="avia-testimonial-content " itemscope="" itemtype="https://schema.org/CreativeWork">
				<p itemprop="text">This is Tina’s testimonial content in Microformat</p>
				<!-- again the same, expressed in RDFa which is much more suitable for extending adding ontologies like FOAF or DC-->
				<div class="avia-testimonial-content " vocab="http://schema.org" typeof="CreativeWork">
					<p property="text">This is Tina’s testimonial content in RDFa</p>
				</div>
				<!-- end RDFa sample -->
			<div class="avia-testimonial-meta">
					<div class="avia-testimonial-arrow-wrap"><div class="avia-arrow"></div></div>
			<div class="avia-testimonial-meta-mini" itemprop="author" itemscope="" itemtype="https://schema.org/Person">
					<strong class="avia-testimonial-name" itemprop="name">Tina</strong>
					<span class="avia-testimonial-subtitle " itemprop="jobTitle">CMO</span>
					<span class="hidden avia-testimonial-markup-link" itemprop="url">http://www.tinasplace.io</span> – <a class="aviablank avia-testimonial-link" href="http://www.tinasplace.io" target="_blank">Tina’s Place</a>
			</div>
			</div>
		</div>
	</div>
</section>

This time I have no link for any live code, but I tested all the snippets previous to sending.
I hope this helps making a better Enfold theme :)
Thanks for reading.

Wonderful! Thank you very much for the forensics. Indeed I created some custom taxonomies, something I have discovered after your research is that even activating types again and purging caches, the countdown still works fine… Looks like the plugin blocked that datepicker and now that you “fixed” it it is not affected anymore by the Types plugin… So mission accomplished :) Thanks again guys! Have fun

Hi Rikard,
Thanks for your assistance, these are the (private) details.

Regards,
Ricard Menor
Barcelona