[Qgis-user] Problem installing QGIS on Ubuntu 20.04 - key authentification

[evaroben at posteo.de]

Dear QGIS and Ubuntu users,

I installed QGIS on Ubuntu 20.04, and it doesn't really work. I used the 
advice on the QGIS website: 
https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu

On the terminal, I have a problem with the QGIS key and keystrings. When 
entering these commands
"wget -qO - https://qgis.org/downloads/qgis-2020.gpg.key | sudo gpg 
--no-default-keyring --keyring 
gnupg-ring:/etc/apt/trusted.gpg.d/qgis-archive.gpg --import sudo chmod 
a+r /etc/apt/trusted.gpg.d/qgis-archive.gpg"
  the system tells me:

"neisolsayaparizabi at neisolsayaparizabi-N2x0WU:~$ wget -qO - 
https://qgis.org/downloads/qgis-2020.gpg.key | sudo gpg 
--no-default-keyring --keyring 
gnupg-ring:/etc/apt/trusted.gpg.d/qgis-archive.gpg --import gpg: key 
F7E06F06199EF2F2: 1 Beglaubigung wegen fehlendem Schlüssel nicht geprüft 
gpg: Schlüssel F7E06F06199EF2F2: "QGIS Archive Automatic Signing Key 
(2020) <qgis-developer at lists.osgeo.org>" nicht geändert gpg: Anzahl 
insgesamt bearbeiteter Schlüssel: 1 gpg:              unverändert: 1"

You can see that my sytem is in German. It means something like: key 
F7E06F06199EF2F2: 1 authentification not verified because of missing 
key. When looking at the list of authentifications, the key in question 
is there:

(screenshot attached)

What can be the problem? QGIS is installed, but when wanting to connect 
to a map server, it indicates that this is not possible due to an error 
in the SSL protocol. I want to use the GIS data from this site:
https://wiki.earthdata.nasa.gov/display/GIBS/Geographic+Information+System+%28GIS%29+Usage#expand-QGIS

Thanks a lot for helping me!

Eva
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