Who should i talk to about my account, which seems to be banned? I don't see any reason anywhere

If you are talking about your account on the DeepOnion Forums than it was banned for one of the following reasons.
Official forum some ban reasons
If user inactive for long time
If user has not got any post
If user suspected to be multiple account of another in the forum
If user fud & scam attempted
If user creating trouble and not useful to the community
we ban or delete these accounts after some time
If your airdrop application was rejected then you can open a ticket in the Forums.