Wasabi trial accounts have a 1TB limit. More information can be found here on Wasabi's knowledge base.

VM Backup offsite backups will fail with the following error message:

The offsite backup operation encountered an error. (Error code 'OFFSITEBACKUPCONTROLLER_036') 

System or application error details: 

Your account has surpassed its storage limit.

System or application error details: 

The remote server returned an error: (400) Bad Request.