Do you have a dedicated IP or is it behind a NAT.
If it's behind a NAT you can try this.
Registry Adjustment (for NAT network)
If your client or server is behind a router with NAT:
Open the Registry Editor (regedit).
Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PolicyAgent.
Create a DWORD AssumeUDPEncapsulationContextOnSendRule and set the value to 2.
Restart the machine.
I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.
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