I apologize for the delay. To the best of my knowledge, there is no limit to the database size. In order to troubleshoot this issue, I will need to involve one of our engineers to review the diagnostic logs. Kindly send me your email address via direct message, and I will create a thread for further communication. Additionally, please provide information on the version of the product you are using, the operating system, and the type of backup plan, and specify whether you are using the legacy or new backup format.