Hello @ArieF7 ,
I'd advise calling our general support for live troubleshooting. When you call in, make sure to have the following troubleshooting info available:
Names of any affected email campaigns you've seen this occur with.
If any error messages showed during the scheduling process - "Unable to save," "a new version of this campaign" or if anything on your device / network indicated a connection issue.
If the preview / test send versions of the campaign after scheduling but before sending showed the correct version.
If any other users on the account would've been making updates at the time, or a previous version of the email in the editor would've been opened on a separate device or tab.
If the affected emails were copied from previously copied email campaigns. Emails that are several generations of copied-copies may result in sporadic formatting issues due to built-up junk coding, which is why it's typically best to copy from a more direct source like a Reusable Template.
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