Instagram third party app log in stuck

I have two Instagram account
I downloaded this app

and then log into my first Instagram account and it worked. but then I log out and try to log into my second account it stuck at "Get the Instagram App download the app to start sharing photos and videos" page and clicking Get App does nothing and click Not Now will just goes into my profile and not actually loging into the third party app itself.

System Configuration: Windows / Chrome 87.0.4280.88