Combining two networks, How to correctly register a route?

Question

Mikrotik

Good afternoon
There are two machines, a router is connected to each via LAN, between them there is a switch-wire from which goes to the WAN ports of both routers that distributes the ethernet. The cars need to see each other.
What we have:
1.TP-Link
Gray address 192.168.208.139
Local address 172.16.3.1/24
2. Mikrotik
Gray address 192.168.208.140
Locals 192.168.9.1/24
3. Iron between them
192.168.208.129/27
And so the bottom line is that having created a route on the tplink: 192.168.9.0/24 we knock through 192.168.208.140
I see the devices of the 9th aunt of the network
But when I set the route on the mikrotik 172.16.3.0/24 we knock through 192.168.208.139
pings do not go, I tried everything and changed the masks and the routes are different, everything is clear
I ask for a lot of help
And yes, the provider stated several times that there are no firewalls and restrictions there everything is clean

Answer 1

Screen of routes