In a Telegram to ban the phone number for that invite to the group for the cryptocurrency in the collection Airodrops and bounty. No, it's not a spam block. Embarrassed It is the ban. How to avoid? All the invitees were in the contact list, maybe you need these contacts to be mutual? Who faced such arbitrariness on the part of the service. I'm angry!
I do not understand, this service is now used more for the purpose of collecting cryptocurrency. A normal specific rules knows where to read what is and what is not.
UPD: Once again-it's not spam. Spam block is assigned if only someone has complained. Do not complain, then ban phone numbers and account deletion.