Problem after upgrading from 3.26 to 3.28

RouterOS General
1

Situation summary: I have router with 8 clients (companies) each on separate interface.
As system administrator I use PPTP to connect to router and get access to companies servers simply with START => RUN
\company_server’s_ip and I can see shares.

But after version upgrade I can’t do this anymore.
Any ideas why?

I use src-nats to provide internet for each company with different addresses.
for example I have ip subnet for company 10.10.10.0/24
and I used to get access to server simply with \10.10.10.5

2

start from pinging the server =)

then look at the result

3

Ping works. All of servers reply but no chance to access to shares.