For test environment after logged in getting error as No Application Access

I have provided application access to users for our test environment but after logging it gives an error as ‘No Application access’. Previously it was working correctly. Attaching error screenshot. Do i need to make any other confugyrtion ?  
1 answers

There are two different types of users when inviting members to a project. 

(1.) Users to collaborate to build the app in the modeler via the different types of roles ex. (SCRUM Master, Business Engineer, Product Owner) 

           App Developer Portal: Team → Invite Member


(2.) Users that can get access to the deployed app for using, testing, or providing feedback ex. ( Administrator, User) 

           App Developer Portal: General Settings → Access Management → Invite Users