Whenever I try to share my URL on a FB post ,I am told that

"my URL goes against our Community Standards on spam" and

FB don't allow people to post certain URLs on Facebook. This includes things like: • Websites with spammy pop-ups • Websites that pretend to be well-known brands • Misleading websites • URLs previously posted by suspicious accounts

I just bought this domain a few months ago and don't know about the previous ownership. Just by looking at the URL pattern they decided it is spam and there is absolutely no way to appeal.