Thanks Yigit
It’s fine now.
Tina

Hi Mike
Thanks but don’t I have to add a page (ergo a link) in the menu in order to have that item to change to mega menu column title?
I include login id in the private content for you to take a look.
Many thanks
Tina

Hi Nikko
I received a reply from SiteGround as follows:

‘What you experienced is a known issue related to the Theme and Plugin updater for some of your website’s components (usually the ones that come with the theme itself). The issue has been discussed and resolved in this thread in the WordPress forums:
https://wordpress.org/support/topic/an-unexpected-error-occurred-49/
You can proceed from the above if the issue persists, which is not likely to happen, but still being prepared is key to success. Contacting the theme developers regarding the exact issue and whether they’ve encountered it with the theme you’re using is also a good idea.`

Everything appears ok now but I thought you would be interested in this response.
You can close the thread.
Thanks
Tina