Everything is OK now, I've set 0x0 value for ftm_mode and it solved issue with SIM cards. (Could you add "disable ftm_mode" feature to installer app?)
Also, I was able to test rSAP in the car and.. it works! Premium mode with dual sim phone - what can be better! First sim is deactivated by rSAP, second is still active and I can switch internet to it as well as I can use WI-FI from the car's sim1. Magic!)
Now need to buy full version of the app. Thanks for you help!
Small update: well, it works even without Reconnect plugin, so don't need to install it.