Thrustmaster a320 thrust porblem

Good day!
Recently, I have bought a Thrustmaster A320 set for Fenix. And here is the problem. When I slowly increase thrust to 20%, it sometimes unexpectedly switches on TOGA for a second or so, and I can’t do anything, causing a havoc while taxiing, taking off, and landing.
More to that , when I put thrust to idle position, it again sometimes switches to TOGA for a few seconds.
I have calibrated the thrust in Fenix MCDU, and I have the base settings.
Anyone have any suggestions ?