FWIW. I have now changed Tapatalk versions. I didn't really want to as was using the 'paid for' versions before they changed their policy. I suspect that the older Tapatalk HD as used on my iPad, is not supported by the Tapatalk plugin on this site, and a couple of others I use.
Updating both my iPad and iPhone to the latest version of Tapatalk has solve the issue and I can now connect freely.
I can, I believe, write to Tapatalk 'people' and tell them I have a paid for license and they 'should' carry that over to the 'VIP Status', I.E. Advertisment free, of the current Tapatalk version.
Strange that both the old Tapatalk versions worked fine until the SSL update
