Android app correction/ updation

We have one web application and 4 android apps named admin app, dealer app, technician app and customer [login to view URL] dealer app, dealer cannot add the new customer and cannot place the new [login to view URL] customer app, complaint is not going to admin and dealer. Also customer fails to submit new enquiry., IN technician app, we cant login to that app using password showing invalid username or password. Also all apps should be tested.