@peterzy thank you for your reply.
In my case all the Mikrotik client devices are in the rural area, so maybe I can make the current VPN to work using UDP (this is the current config) and once I get access to the device I can change the config to TCP. If the device could get connected for a couple of hours for me that's enough.
In this regards, could you please share the details about changing the PING settings so maybe I can get them connected temporaly.
Thank you!