Delete Cloud Recordings on free plan

I receive the following email constantly:

This is a reminder that 85% of the available cloud recording storage for your account is being used.
4.24 GB (85% used) of 5 GB
Cloud recording will be disabled once 100% of the available storage is used. You can click "Upgrade" to purchase additional storage space, or click "Manage Recordings" to delete some files to make space.

However, when I try to delete some recordings, I get this error - Account is not paid. (2,015)

Can anyone advise me how to get rid of that spam?