Are you referring to your posts on iNaturalist, or on the iNautralist Forum? I see no flags on your account on iNaturalist, but two here on the Forum. So I’ve moved this thread to the proper category, #forum-feedback, since #bug-reports is for reporting bugs with iNaturalist.
The iNaturalist Forum is run on Discourse.org software and servers. We use Discourse’s default setting that if a new user links to the same domain in three posts, the system considers them spam. That’s what happened here. I honestly don’t remember this ever happening in the three year history of the Forum, although I may be wrong.