Hi @milon
The first instance is that this is an entirely unsecured approach that you guys have undertaken in sharing your username and passwords to people on the field. Normally when this happens and we have issues, we are often not able to help you resolve them since you have literally abdicated your security rights when you do so.
Since inception, we have always had ever-improving share form functions that allow you to share the specific form/project with different users and allocate different permissions to them. We would advise that you use this approach that is explained in the support article below to ensure that you safeguard your main account.
Stephane
