At the moment, anyone returned nothing of the value of the posts, which was zeroed out.

You can kiss those rewards goodbye as were not yours in the first place. Those were pending rewards and therefore subject to adjustment, till the 7 day period ends. Rewards are yours only after the 7 day period ends. You should know this by now as you're not a new users, not to mention it has been explained to you several times.

no one talked about a solution for my case.

As far as I know, you were told several times what is the solution to avoid double posting, but you did not want to accept it.

Hivewatchers also told you what's the way to be removed from the blacklist.

source

This means when you finish the appeal period and they approve it, you will be removed from the blacklist.

I am not posting on the Hive chain because the value of the posts would be taken to zero

I doubt that. If you stop double posting, there will be no reason to downvote you, unless you break some other rules.

Hive.io is a frontend, even if you get a reply, they will tell you to go settle the matter with Hivewatchers.

Downvoting others now looks like revenge and you won't get those rewards back for the reason I mentioned above. This is the fastest road to nowhere. I thought I would give it a try and talk to you, maybe you change your mind and start posting again according to the rules, but I'm not going to engage in long disputes, as those before me have already explained you everything. It's up to you if you change your mind or not, but the only one who can lose here is you.

Anyway, good luck!