What's the point of having a Telegram group?
Do you want to promote your service among the group members?
Do you wanna use the group instead of a customer support service?
I still don't know why many crypto projects use Telegram for marketing.
It looks like most of the people don't find any value of joining a "dead" Telegram group with low quality discussions,which is created only for promotion purposes.The altcoin/token incentive doesn't help.
If Telegram doesn't work for you,I guess that you are going something wrong with your marketing,or you should change your promotion methods.