Soundrop refuses AI music.

If you look at this help page, you can see the following statement.

A note about AI content:

Soundrop is unable to distribute any content generated by artificial intelligence. Even if the AI generator you’re using allows commercial use of what you made, there’s no way to ensure unique sounds or rights compliance. 

https://support.soundrop.com/hc/en-us/articles/360021755672-How-to-stay-in-good-standing-at-Soundrop