Issue logging into app

There is currently an issue logging into the app, you can put the correct e-mail and password in and nothing happens, it doesn't even bring up an error. I think this is an issue with the verification of e-mail addresses on the login screen. (if there are different settings per app, I'm currently using an IPad)

More info if needed:
I prefer to use an e-mail rather than linking through other accounts and seems others have had issues with the same thing but not gotten much support so I checked some variables, when I changed my e-mail to a g-mail account it logged straight in, so I suggest there's an issue with my custom e-mail address and how the app verifies what is an e-mail address (maybe because of a hyphen?), but there's no error message set to advise so you just get no feedback on type of error. I hope this helps and can be fixed.