Telegram sender is not a scam prodcut like others. But defenitely need improvements in case of speed and latency. If you are looking for a high speed one its not for you. Also high speed bulk message sending won't work in telegram as your account get block pretty fast. Telegram sender is not a scam one but low speed one. Majority of telegram accounts are fake, created by ico marketing scammers. So better choose groups wisely before starting marketing with this tool. Its not recommeneded for everyone. Better use vpn to solve issues with exporting. I think if issues with exporting, program generates fake members for just demo working. Contact them for solve exporting issues. Support is slow.