Sure, but this isn’t about investigating individual jams (and what could be done even if so, anyway, if they “have the right to decide who can and can not participate”? I mean, participants can’t even ask for a rationale?)
It definitely is about investigating the individual jams and your account. I could contact the host(s) to learn about their choice and see if there is a better set of functionality for them to allow them to better handle the moderation decision they made. We do provide jam hosts a way to “disqualify” and entry without removing it, and they are free to leave a comment on the submission page explaining the issue. It sounds like, in this case, they opted to just remove your entry entirely. (Another possible explanation is that your account was banned form participating in jams by as site admin due to violating our community guidlines here: https://itch.io/docs/creators/quality-guidelines#game-jams/do-not-add-your-game-to-unrelated-jams-for-promotion.) If necessary, I could set up a conversation between you and the host through our support system to get a better understanding of what happened and to see if re-instating your entry is an option.
This actually happened in multiple jams that I noticed…
The fact that you have encountered this very specific situation multiple times suggests to me that there is something more going on about the nature of what you are posting. Multiple independent hosts would of had to disagree with your submission so strongly that they outright removed it. Because this sounds like a very rare occurrence, I would guess that your account was actually banned from entering jams globally. Combined with the fact that you used an alt account to raise the issue makes it more suspicious to me.
I am unable to assist you any further unless you are able to reveal the affected account. If it’s not something you want to post publicly then you can contact support and reply to me here with the ticket ID.
Because ban evasion is strictly against our rules, I’ll have to lock the topic if you aren’t able to continue the discussion with the requested information.
Thanks