Meraki to Azure site-site VPN

Question

HI,

We have a number of site all with a meraki MX firewall. We have a VM in azure and i need to be able to access this from our sites. All our sites have BT internet connections Initially i set up a virtual gateway in azure and then site-site VPNs for all our sites. I had to set the BT routers to bridge mode to avoid double NATing.

This all worked fine until we upgraded the BT lines and you cannot set the new hubs to bridge mode, and i can not go back to the old hubs as they dont support the BT hybrid backup.

instead i installed a VMX in azure and connected all the sites to this. They all connected fine, but i kept getting timeouts when accessing data on the azure VM from our sites. Neither Cisco or MS could fix this issue.

what other options do i have?

thanks

Gareth