Unable to play the game once i have attempted to login to my Microsoft account

If I login to my Microsoft account the game crashes then fails to load even after a full reboot of my IOS device, this is the same on my IPAD Mini 4 and IPAD Pro 2, I have to reinstall the game to get it to load, I can only play now if I don’t log in to my Microsoft account, basically this is making the game unplayable for me as I require login to MS account to access my purchased packs and the private server I have been playing on for the last year. It’s just hanging on the loading screen with the MC logo and the loading bar. I have tried rebooting the local network and even connecting to another network.