How to solve – “No employee with login access found”

1. Create or open the employee in Business Central.
2. Enable the employee for POS365 and allow the employee to synchronize.
3. In the Admin Center, go to Setup → Employees.
4. Select the employee and assign the appropriate permission role.
5. Select Save.
6. Open Menu → Change password.
7. Set the password the employee will use to sign in to POS365.

Indepth guide link: "How do I add an employee to POS365?"