Is there any other way to contact with administration besides tg?

you still gonna need tg to use club's signals and other stuff. Better download it once.

Its blocked in my country and I dont like to seek for a way to avoid the block.

Use some free VPN or proxy to get an access to telegram, as simple as that :/

Companies that supply users with free vpn and proxies usually sell all the data collected from users.

Sell to who?

Literally everyone who names a good price, most companies do that

Goverment included :/

Why would gov need our data?

Simple mortals can't know everything Cheesy

Ask that to FBI and FSB