Hey Eric,

This is a server side issue.  To fix it you have to reach out to the support team via one of the two methods below.

Via the webform: https://plrm.me/arena_support 

Via the email [email protected]  

If you know your in-game ID please put it in the description if not the gmail you are using.  Otherwise, screenshot the error screen and reference the same error code you did above (Error Code 614).