I couldn't find the link back to an issue I've filed about auth in Teams, but certain authentication issues are specific to using iOS and do not exist on Window

I couldn't find the link back to an issue I've filed about auth in Teams, but certain authentication issues are specific to using iOS and do not exist on Windows... Namely, when invited in an organization, I cannot connect because I have a free personal account, but only on iOS. Windows and web are ok. Support tried to sell me a paid account, of course. As a freelancer I've lost a full day of work at the beggining of the pandemic due to this, thankfully I now have only one client (a school too) using Teams so I don't have to switch accounts.