I’m not sure if this is your problem, but you need to align yourself (facing the kineckt) with the T-Pose avatar. You should see the white balls in vrchat as well as the trackers in SVR overlay on your feet and hip. Once you align yourself, hit both grips at the same time, *while your head is facing forward/the Kineckt!!*
If you did these steps already, or if the model is still stuck in T-Pose after hitting the grips, or if you do not see the white balls in VRC, there might be some other problem going on.
Sometimes you have to let SVR load first before opening VRC because the Driver4VR has to load.