GPG validation Key installation

From the support article I checked the fingerprint.

However the key that is linked from the email still has the old gpg fingerprint.

I got UNKNOWNSIG _gpgbuilder 61A7C71D after running the commands listed in the latest instructions page for Ubuntu/Debian. There were many incorrect parts of the instructions (I figured out that the key I need to install is the one I downloaded rather than the generic one given in the instructions; I figured out that they are assuming the files go to the Downloads subdirectory, etc), but the last step ended with that error message. What can I do to correct it.?
_____
jgiddings@thelinuxlaptop:~$ gpg --import ~/Downloads/package-signing-key.pub
gpg: can't open '/home/jgiddings/Downloads/package-signing-key.pub': No such file or directory
gpg: Total number processed: 0
jgiddings@thelinuxlaptop:~$ gpg --import ~/Downloads/package-signing-key.pub
gpg: can't open '/home/jgiddings/Downloads/package-signing-key.pub': No such file or directory
gpg: Total number processed: 0
jgiddings@thelinuxlaptop:~$ gpg --import ~/Downloads/package-signing-key-5-12-6.pub
gpg: key 7B04A1B8DD79B481: public key "Zoom Video Communications, Inc. <***********>" imported
gpg: Total number processed: 1
gpg: imported: 1
jgiddings@thelinuxlaptop:~$ sudo apt install dpkg-sig && dpkg-sig --verify ~/Downloads/zoom_amd64.deb
[sudo] password for jgiddings:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
adobe-flash-properties-gtk caribou cgmanager deja-dup-backend-gvfs
dleyna-server esound-common espeak-data ethtool
evolution-data-server-online-accounts evolution-indicator foomatic-db-engine
g++-5 gcc-4.8-base:i386 gcc-5-base:i386 gcc-6-base gcc-6-base:i386 gdm
gir1.2-caribou-1.0 gir1.2-clutter-gst-2.0 gir1.2-gconf-2.0 gir1.2-gkbd-3.0
gir1.2-indicate-0.7 gir1.2-nmgtk-1.0 gir1.2-panelapplet-5.0
gir1.2-syncmenu-0.1 gir1.2-ubuntuoneui-3.0 gir1.2-vte-2.90 gir1.2-xkl-1.0
gksu gnome-desktop-data gnome-games-data gnome-games-extra-data
gnome-icon-theme-symbolic gnome-media gnome-packagekit-session
gnome-themes-standard gnome-tweak-tool gnome-tweaks gnomine gnotravex
gnotski gnupg-agent gstreamer0.10-nice gstreamer1.0-clutter gtali
gtk2-engines guile-1.8-libs hal-info hardening-includes i965-va-driver:i386
icedtea-netx-common indicator-sync ipset jq kactivities-bin
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xserver-xorg-video-savage xserver-xorg-video-siliconmotion
xserver-xorg-video-sisusb xserver-xorg-video-tdfx xserver-xorg-video-trident
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
libconfig-file-perl
Suggested packages:
ssh
The following NEW packages will be installed:
dpkg-sig libconfig-file-perl
0 upgraded, 2 newly installed, 0 to remove and 2 not upgraded.
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Get:1 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 libconfig-file-perl all 1.50-3 [9,722 B]
Get:2 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 dpkg-sig all 0.13.1+nmu4 [33.4 kB]
Fetched 43.1 kB in 1s (62.1 kB/s)
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Processing /home/jgiddings/Downloads/zoom_amd64.deb...
UNKNOWNSIG _gpgbuilder 61A7C71D
jgiddings@thelinuxlaptop:~$

Hi adit47

As I understood it, 2 November was the important date, after which I believed my version of Zoom (running on Debian linux) might no longer work, so the steps above were what I did to download and install the latest version (at that time), then the new key, and all has been working fine since.  If I've missed anything, I'll be grateful to know.

I recently had the opportunity to do the same for about 3 computers all running Ubuntu. It seems to work out just fine as described in the support article that I was directed to by Zoom (basically the same as we had all received earlier but a bit clearer). I DID have a whole bunch of stuff go by when I tried to validate that the key had been installed. Apparently there was a whole bunch of stuff that needed "fixing" on my computer that had nothing to do with Zoom. But it doesn't seem to have affected anything else.  Thanks to everyone for your rapid response to my original post and to the Zoom folks for their responsiveness.

I am very interested on this as well.