Hello Jadefish9,
Thank you for posting your question to the Apple Support Communities.
From what we understand, you have seen several messages disappear from the Messages app. If this was related to your iCloud account being disabled, you may be able to enable Messages in iCloud again in the Settings app. Please follow these steps to ensure that iMessage and Messages in iCloud are enabled:
- Go to Settings > Messages, then turn on iMessage.
- Go to Settings > Messages > Send & Receive, choose your phone number or email address that you would like to send and receive messages with.
- Go to Settings > [your name] > iCloud, turn on Messages here.
If all of these above are already enabled, please keep in mind that any messages you delete from your other Apple devices are also deleted from your iPhone when Messages in iCloud is turned on.
We hope that this information helps you find a solution.
Cheers!