rb2011UiAS + mobile exlay easy (android tethering)

Need use my "Explay Easy " phone for the internet connection via USB tethering with my “MikroTik RB2011UiAS-2HnD-IN” router. But trouble. There is a cyclical recognition phone with different IDs. Like attache screenshot and interface - Lte1 up/down at 1 or 2 second. I want to LTE backup connection. Thanks.

Please, help.
Any ideas?