Hi @Huain , are you able to schedule in an outage to test disabling AMP and see if this resolves the issue? If this works, re-enable AMP and contact Meraki support for assistance.
I believe I had a customer with a similar issue and they added the url or IP to the whitelist for AMP
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.