Smush doesn`t start optimization

Hi @rainer-r,

I hope you are doing well today!

Please let us know if you are seeing any warnings or errors on the plugin screen and make sure to allow Smush IPs on your firewall which are listed in
https://wpmudev.com/docs/getting-started/wpmu-dev-ip-addresses/

If above does not help, I suggest you to perform full plugin/theme conflict test.

Please make sure you have recent backups and perform this operation on your dev/staging site if possible.

To learn more about a plugin conflict test, please see this guide below:
https://wpmudev.com/docs/getting-started/getting-support/#conflict-test

Check out this handy flowchart of the troubleshooting process detailed above.
https://wpmudev.com/wp-content/uploads/2015/09/Support-Process-Support-Process.gif

Please let us know the results accordingly.

Kind regards,
Zafer

I added the IPs to wordfence. now smush work.
Thank you for your help.
Rainer