Hi EgmaFromel,
Hopefully I may be able to help you.
Both of these Groups were set up long before I joined them.
I was invited to become an Admin & to help the original Admins, (due to their personal/health reasons), to update the Group rules and security features.
The rules etc. are now very strict for all members, mainly to deter Scammers & Spammers, and also using 'AI admin assist' security features.
Please contact me on Facebook messenger, so that I may check out the reason(s), to try and resolve your problem.
Both facebook groups have no association to the excellent 'British Steelies Society' or the 'BSS forum', which, as you can see here, I'm also a member.
https://www.facebook.com/jim.pritchard.9400