Wierd assist problem

Hey guys, been multiboxing for a while, and since the start I had one problem that I couldn't solve:

When driving from slot 3 or slot 4 I get assist from all other slots.
But requesting an assist from slot 1 or slot 2 results in assist only from theese two slots (1-2).
When trying to get an assist from slot 5 I don't get any assist at all.

I've been through google search, searched this forum alot, watched hours and hours of MiRai videos but due to me being new to multiboxing
or simply loosing some simple answer I didn't find a solution to this problem.

IsBoxer addon is ON for all characters.
Keymaps like Alt+backspace and all other are free too and not conflicting.

P.S. And today I got a new error: When launching from Inner space on slot 2 I get a message for wrong character in this slot, and it says that instead of "Aelris" there should be "Aelris", I mean, isboxer addon is telling me that Instead of the character
that is currently in the slot I should get this exact character. Strange.

P.P.S. If my spelling is bad -- my apologise, I'm not native english speaker but I am trying my best.

Oh yes, follow works just fine across all slots.