Leshiy 2 build tips needed. (What NOT to do) Parts guide or guidance

"What not to do" looks like I missed some steps not reading the manual precisely...

Received the L2 late last afternoon, put it together with - a mag w magnetic plate in place, closed the stock/gun, and now I cannot open it or just don't know the trick for it.

The long lever on right side (even the Edgun "how-to" video is showing) doesn't move and I don't want to brake something.

What did I miss?

Same here,

After closing it to hard, with the safety on, it would not open again.

Side lever was bending to much, and did not lifted up the closing lacth.

A little balistol, and there she is …up and running again.