Can't get into iserv?

I can no longer enter iserv on my cell phone. There are always 2 fields, so name and password. Then I enter everything correctly and press register, but then the fields are empty again and I have to enter everything again, but it still doesn't work. There's no error message like wrong password or something. And if I enter it on another cell phone, tablet, my laptop or computer, I come in. I can't get in with the iserv app either because something is wrong with the email. But otherwise it always worked with iserv. And the data is correct.

Uninstall the app and download it again. It also helped me

You have to change the browser, it is up to the browser, wait for the next update and try again with your standard browser

How do you change the browser?

It's mainly about the page on the Internet.

Install a new browser and open it or do you use the app?

Am I stupid or don't I really know what a browser is? So I'm on the Internet on the page and do not use the app. And I do it with Google.

Then install another browser, like Chrome or Firefox, and try again, sorry for the late reply