3 places with vpn, routing problem

Hello,

I have 3 mikrotiks, just one of them has fixed ip, so i create 2 servers pptp in this router, then i conect the others routers to this vpn servers. The lans ip are:
192.168.10.0/24 for the firs router
192.168.20.0/24 for the second one
192.168.30.0/24 for the last one.

The problem I have is that I cant ping from the second to the third lan and from the third to the second. The pings from 1 to 2, 2 to 1, 1 to 3 and 3 to 1 works perfectly.

Any suggestions?

Thanks in advance

Did you create routing rules on router 3 for 2 and vice versa?