Can not print with HP OfficeJet 4652 and Ubuntu 24.04

Hello
unfortunally i've upgraded my upbutntu to 24.04. Now I'am unable to print.

hplip version 3.23.12 ist installed and hp-setup crashes with:
Speicherzugriffsfehler (Speicherabzug geschrieben) ->> Memory Access Error

So I decide to download your newest version. But I'am struggle because I can not get the public key for pgp verification:

r@hr-Vivobook-ASUSLaptop-N7600ZE-N7600ZE:~/Downloads$ /usr/bin/gpg --keyserver pgp.mit.edu --recv-keys 0xA59047B9
gpg: Empfangen vom Schlüsselserver fehlgeschlagen: Kein Schlüsselserver verfügbar
hr@hr-Vivobook-ASUSLaptop-N7600ZE-N7600ZE:~/Downloads$

so I'am unable to connect the Key Server.
Should I better dongrade ubuntu versione?
Before hplip works so good for me

thank you for any help
regards Hansruedi