I have 2 mikrotiks, which are linked together by a GRE IPSec tunnel.
First mikrotik have 10 IP address (10.0.0.2-10.0.0.11 and GW 10.0.0.1). In /interface gre local-address=10.0.0.5. But after internet trouble, ESP packet have source IP 10.0.0.2 (minimal address in IP first mikrotik), which input on mikrotik2. If reboot first mikrotik, all work fine.
PS
Sorry, i very bad know english 
Guessing from the way you write your name and from other symptoms, maybe a russian-speaking forum could be better for you? If my guess is wrong and you’d actually need a Serbian or Croatian one, bad luck, I don’t know any.
To get any help, you have to post the output of ****
/export hide-sensitive
. Before posting, systematically replace all occurrences of each public IP address by a distinctive pattern like
my.public.ip.A
.