[cardcrimson]

This sounds like a problem with your account (or its data) on the Cardboard, not a problem with how you read the Cardboard.  Maybe someone with admin privileges can delete some messages for you.

Did you try sending a test message (to me, say), and then deleting it?  Perhaps it is just messages older than some date that are a problem.  (My tests were deleting of messages from 2018.)

Just sent you a test message. It won't delete. . . .

[cardcrimson]

This sounds like a problem with your account (or its data) on the Cardboard, not a problem with how you read the Cardboard.  Maybe someone with admin privileges can delete some messages for you.

Did you try sending a test message (to me, say), and then deleting it?  Perhaps it is just messages older than some date that are a problem.  (My tests were deleting of messages from 2018.)

Just sent you a test message. It won't delete. . . .