See here's what I don't get...
Why ignore @stellabelle? She has offered you a solution like several times in this thread. Why ignore it? Why not simply acknowledge it.
"Hey thanks, @stellabelle. That might work for me, I'll have to check it out."
"But wait, will all users still be able to see my posts?"
Yes.
"So I'll be able to block malicious users from commenting on my posts?"
Yes. You will @cryptofinally.
"Thanks. I'm going to give it a shot, and if it works, I'll make a post about it."
See, it's not hard to acknowledge the solutions being offered to you.