I don't know, but I'm so sick of being blocked that I don't bother posting half the time now, I got blocked only yesterday for posting a classical music suggestion on another thread!!
Yes, very frustrating. I can't even type a simple sentence without it being blocked.
The company that does the checking is not even in business anymore. Product was off sale in May 2017, services will be turned off 2nd April 2018. As What Hi-Fi appears to spend no effort on this forum then hopefully the blocking will stop in April or maybe it will block everything!
Note from mods: You've both now been added to the trusted group.