Can you give me (super) admin and (s)ftp access so I can take a look?
And tell me on what url I can see/reproduce the issue.
You can use the 'Hidden text' button in the forum editor to hide the confidential information.
I had them on the phone
So : I went into regular labs exetension manager and have the error "could not retrieve..."
And in the log of outgoing request there is at this time :
Ok, looks like this WAS an issue on my side. So on the SiteGround server my website is on.
It was due to an anti-bot captcha system. This is now switched of for that domain.