If, signing in, you encounter the following error:
This message may be caused by connection issues. Please restart the game and try again. If the issue persists for some time, it means that the use of forbidden modifications of the game's client was detected on the account. If you haven't used any forbidden modifications, you can submit an appeal to the developer team of our protection system through the following link: https://www.easy.ac/en-us/support/Enlisted/contact/appeal/
You can see the account's Player ID, required to contact the EAC support team, via profile page on our website, Settings - > Account protection. It will be displayed in URL field of your browser: