5/11/2017 -- A fix for this issue was pushed to the Store yesterday and should be available now for download/upgrade. Look for version 1.2.74.170 to make sure you have the latest update to fix Gmail accounts.

How to check your version and manually upgrade:
https://touchmail.uservoice.com/knowledgebase/articles/583521

Please contact support if you have any problems. We're sorry for this issue and appreciate everyone's help and patience while we resolved it.

Thanks!
TouchMail team

4/30/2017 -- Recently Gmail has changed their authentication model and users are being presented with a dialog asking them to paste a code into the app.

We're working to get a resolution to our users as soon as possible so they can sign into TouchMail as they've always been able to do before. We're very sorry for the inconvenience in the meantime.

Please follow this feature in UserVoice or open a ticket and we will email you as soon as we have this resolved.

Thanks,
TouchMail team