Climate doesn't work and a few small things

Hello, everybody.

I have been to the forum several times but unfortunately I have never spoken.
I bought a 90 PT last year and made it pretty good over the winter. Part new paint, new exhaust, timing belts, oil change gear, level out (well) and still countless little things. Four weeks ago, he got another gas system missed!

Unfortunately, my climate has not been in a few days. Fan, blower is all about it, only the compressor doesn't start. Hanged the compressor from my battle V8. The coupling also does not turn on.(But in the old V8 100%) I can't imagine too little gas, since the system has cooled quite well before (still R12 in). What could be going on?

And my cruise control sometimes doesn't work the speed!
When the climb goes up, the swirl drops. Slow down. Someone has an idea.

Otherwise it runs like a one, no comparison to my truck (Omega B, also gas). Opel is not an Audi and won't be anymore!!

Thank you for your help in advance