Cannot log into the app

Because the title say i cant log into the app the pics are the three issues I see on this course of

I click on check in, then click on my profile "Ding Us", then it says to solely proceed if I downloaded the app from a retailer I belief (the Google play retailer) then it sends me again to the start what might I probably be doing fallacious right here

Dialogue aptitude as a result of i want aptitude to publish this