erkal - Blimey. Your machine is 2 months old but that gasket looks like it had a tough time :-) - I’m not surprised it’s leaking, as the dispersion plate clearly damaged the gasket (was really tight as you said) and if you look closely, you can see the ident from the portafilter being done way too hard.
My suggestion is to change the gasket and go from there. They are not that expensive. If you live near Newbury in berks I can even give you one for free :-)
PS: It looks like the right way up.
And… You can see there’s coffee there - potentially leaked over pressure due to the damage. If you don’t clean that, and just lock the PF and pull next time, you’ll have a leak.
