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Could it be temporarily?

Who knows... Everything is possible. But I doubt...

I filed an appeal

Hope it will help. When they ban a 1-week-old account, nothing can probably help but yours is much older.

Created a new reddit account, bumping on: it's not old enough / low karma in most communities though so will need some time before I participate again.
But I will be back sooner or later! :D

Will wait a couple more days and see...
Otherwise, I'll just create a new one the coming weekend.

Made the new account, posted in a community in which my main account was banned apparently, got the new account banned for ban evasion...
Old account has a ban for 7days.

Tldr: Old account banned for 7days, hopefully I can utilize it again afterwards. New account permanently banned.