Hi,
After some trouble-shooting and fixing in this case:
https://www.boonex.com/forums/topic/Forum-feed-doesn-t-display-in-SSL-mode.htm
which relates to the Forum feed block, it turned out to be another problem with the Google Location block with full SSL on the site.
Please advise what else you need to trouble-shoot this problem. AlexT has login credentials to the site and I'll leave those credentials active for a while until resolved.
Thanks.