OVPN can't connect

RouterOS General
1

hello, please help .

I created an OVPN, the connection is stable but I can’t connect to any device. Even ping doesn’t work. I can only ping the Mikrotik router.
I have already created an ovpn server 2x but still the same result, I don’t know where the error is.
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2

Have you tried to add the network to the Push Routes ?
Default: 192.168.88.0/24

3

Hello, no, I don’t know this

what is this ?