We use an external live content platform to integrate with Adobe - this used to work fine however we did have to manually import the live content tags to the source, as uploading this within the html template threw back an error.
Now the manual workaround isn't working and all tags from this platform are being rejected - meaning the emails cannot be sent.
These are the errors when trying to send a proof/test:
I've raised a ticket and have had no luck/help.
Would appreciate a prompt response,