I just learned that you have to have account to ipux.io web site before registering to telegram bot!
Bot will ask you what email you used at ipux.io

so before you join telegram create account here https://ipux.io/en/register.html?i=8194&h=d60fd1c82bceccab9f634f6c657f2ba652d233f39eb27e21188b8cc80389f55c