After updating controller In alerts "The number of logs is up to the limit"

How does one get info on the V2 API? I see on previous posts it was provided for V1, but nothing on the newest. I am currently running the Omada V4 Controller Software. Example - https://community.tp-

In Omada Controller 4.1.5, the Mail Server settings are a bit misleading. It says that the "Sender Address" is optional but it is actually not optional. I am trying to configure mail so it doesn't CC

Using Omada Controller 4.1.5, the auto backup feature is failing to execute. My logs state: [Failed]Auto Backup failed to execute with generating file AutoBackup failed because autobackup schedule tim