Have you tried reseeding passive copy of the database.
If not Please check the link on steps for reseeding the database.
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online.
The email signature template has been downloaded from:
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA).
For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651
If you want to manage em…