I have a problem trying to get the app PC Express past the sign in. The app is part of the yourindependentgrocer.ca app. I have used Firefox, Chrome and Edge and have encountered the same problem. I use Proton for my e-mail and I have used all their apps for my computer. I recently changed the start up app from judymk@protonmail.com to judymk@pm.me. I don't think this is a problem as Proton says the app should not care what protocol is used as it translates the same regardless of what app is used. I would appreciate any help with this.