Merry Christmas HELL Getting in the case of silvercrest gateway

Hi total noob here,
I have trying to get into the silvercrest lidl zigbee but failing. I am following Hacking the Lidl Silvercrest ZigBee Gateway: A Step-by-Step Tutorial - Tutorials & Examples - openHAB Community but cant see the line or have the wrong tools can anyone help please recomending pry tools and the the flamining line is(might need to visit specsavers). I really would not like to damage the case but if i have to, can you give instructions they would be greatly appreciated(NB also have BFG fingers that aint nimble yet).
thank you in advance

Are you saying you are stuck at step 1 - opening the case?
Are you sure the remaining 13 steps wouldn’t be too much for you?

Anyway, if you feel up to the task, iFixit tools are a reference.
Look for one with this kind of “pry bar”.

I’m sure you can find knock-offs on Ali as well