Does not work on Ubuntu 20.04 Error 5003

[AndyKh]

Hello! 

My zoom app stopped working on Ubuntu 20.04 2-3 weeks ago. 
It was version 5.something. Installed 2 years ago. 
I've updated to 6.0.10.5325, cleared all caches and rebooted PC. 
I can ping zoom.us and can not ping zoom.com. But it gets resolved in ip address. 
I get response for curl https://zoom.us. So it does not look like my firewall blocks something. 
Also tried from mobile internet to exclude ISP issue. 

I've corporate credentials, so it is paid subscription and has to work on linux.  Browser version is not a workaround for me. I need remote control feature. 
From time to time in communicates with zoom server

~$ sudo tcpdump -nevi wlp0s20f3 -s 0 net 170.114.0.0/16
tcpdump: listening on wlp0s20f3, link-type EN10MB (Ethernet), capture size 262144 bytes
19:18:55.346931 0c:7a:15:f8:ad:40 > 6a:02:b8:c4:dd:42, ethertype IPv4 (0x0800), length 74: (tos 0x0, ttl 64, id 11180, offset 0, flags [DF], proto TCP (6), length 60)
    192.168.0.215.56552 > 170.114.7.148.443: Flags [S], cksum 0x73b4 (incorrect -> 0x5e30), seq 3834848490, win 64240, options [mss 1460,sackOK,TS val 2159481472 ecr 0,nop,wscale 7], length 0
19:18:55.628708 6a:02:b8:c4:dd:42 > 0c:7a:15:f8:ad:40, ethertype IPv4 (0x0800), length 74: (tos 0x0, ttl 104, id 0, offset 0, flags [DF], proto TCP (6), length 60)
    170.114.7.148.443 > 192.168.0.215.56552: Flags [S.], cksum 0x8ed4 (correct), seq 2628457268, ack 3834848491, win 62643, options [mss 1460,sackOK,TS val 946531645 ecr 2159481472,nop,wscale 7], length 0
19:18:55.628760 0c:7a:15:f8:ad:40 > 6a:02:b8:c4:dd:42, ethertype IPv4 (0x0800), length 54: (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 40)
    192.168.0.215.56552 > 170.114.7.148.443: Flags [R], cksum 0x5438 (correct), seq 3834848491, win 0, length 0

[AndyKh]

Sorted. Removed package downloaded from zoom.com and installed via snap. It gave version 6.0.2.4680

[sol39]

what is via snap?

[AndyKh]

Hi @sol39,

check this out: https://ubuntu.com/core/services/guide/snaps-intro