Prius + 2013 Gearbox mount problem?

Hi guys

I have 2013 Prius + (eu version)(with 450.000km.. about 400.000 Miles? ohh yeaaa) , and i think i have problem with Gearbox mount, when i press Gas brake Gas brake gas brake.. i hear "klicking" sound from side where gearbox mount are..
Can someone tell me, do i need touch inverter? or i can make some place without touching that? because i dont have anyyy place for gearbox mount to change..
please give advice how change that mount easier


orrrrrr maybe that klicking sound are not from gearbox mount?

 

And video with sound(knocking) in left gearbox / chassis side when giving some gas:

 

I can see 3, 1 and 4(not so mutch..).. but where is 7? can i see from engine side? or just from under car??

 

I found problem.. i will update this post with fix(cheap edition fix.. ) and some fotos in next week