Thank you for your reply.
2.Translation – of course it is typo and should be *loco translate. I translated key elements like “add to cart” but changes where not visible. And I am not sure why (as wrote above all caches cleared). Apologies for misunderstanding.
3. I am not sure where to find it – could you write a little bit more?
As wrote above – I had to turn off amp as it was not possible to configure it quickly on live site. So right now AMP is turned off.