So I have a few bots, people are using them.

Sometimes I read logs to check out what people write to them. And I found two messages on which I decided to answer. They asked to get in contact with the bot developer. Looks like some of them reported me as spam, because they was last people not in my contacts which I wrote to. And now my account is limited to DM contacts only. I have not sent any spam or advertisiments. @SpamBot does not give any option to lift the limit now, so how can I solve it?

Contact the support

which way?

Telegram support can't lift restrictions. Especially if @SpamBot says that the restrictions can't be lifted.

it feels really unfair if a bot developers trying to improve their bots by contacting its users and get limited in result

It's not that you contacted them. It's because you contacted them AND they reported you as spam. Just wait for some time. How long is the restriction?

they contacted my bot with a question to developer, ,"text":"Is there any way to comunicate with the guy who keeps this?". For sure I not expected that people who get their message quote, and answer to their question in DM will report me

It can