mk hap lite openvpn server & windows 7 client routing

Help please on a question.
Is:

  1. VPN - the server on a microtic of hap lite (192.168.23.1) (10.0.5.1 - ovpn) (routes on client subnets are registered)
  2. vpn-clients on hap lite microtics (192.168.51.1,192.168.52.1,192.168.53.1 all/24, routes are at each other registered)
  3. the client on windows 7 192.168.91.20 (/24) routes on a subnet are registered in ovpn config above, the firewall is disconnected. (the service of routing is launched)

We have:
a) computers for clients microtics (2) are normally seen and ping computers from other subnets (2), everything normally works.
b) the client on Windows (3) sees only 192.168.23.0/24 and normally works with them, but doesn’t see not one subnet from (2) though routes are registered everywhere (in three places (1,2,3))
c) if to let the screw client (3) through the same hap lite, without touching setup - that everything perfectly works at remaining routers.

Question:
How to make that the client of ovpn from Windows saw subnets from (2)? In the firewall on (1) disconnected all deny rules - didn’t help.