Imho, something is wrong with DNS on your router (192.168.0.1)
please post:
dig @9.9.9.9 upwork-usw2-desktopapp.upwork.com[chawila@devTool ~]$ dig @9.9.9.9 upwork-usw2-desktopapp.upwork.com
; <<>> DiG 9.16.13 <<>> @9.9.9.9 upwork-usw2-desktopapp.upwork.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
What about
dig @1.1.1.1 upwork-usw2-desktopapp.upwork.com
?
[chawila@devTool ~]$ dig @1.1.1.1 upwork-usw2-desktopapp.upwork.com
; <<>> DiG 9.16.13 <<>> @1.1.1.1 upwork-usw2-desktopapp.upwork.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
[chawila@devTool ~]$ dig @8.8.8.8 upwork-usw2-desktopapp.upwork.com
; <<>> DiG 9.16.13 <<>> @8.8.8.8 upwork-usw2-desktopapp.upwork.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
To me, this looks like your ISP is blocking DNS queries. 
Me too. Can you disconnect your router from the power for a minute and the connect it again? I donāt have high hopes, but maybe something happensā¦
1 Like
You mean restart it?
Yes, but completely disconnect it from the power for a minute.
Could really help I guess. Somehow the DNS cache on the router or so seems to be screwed up.
Just did and the results are the same.
iām using a wireless modem it uses simcard.
it generates new IP on every reboot.
This is why I told you how to configure NetworkManager to use nameservers of your choice.
The settings of the router would not matter then.
Please try:
dig @208.67.222.222 upwork-usw2-desktopapp.upwork.com -p 443
443 should go through i hope.
@Nachlese i did try that and it stopped my internet. or mybe i did it the wrong way. perhaps you can assist on how.
@moson here is the results:
[chawila@devTool ~]$ dig @208.67.222.222 upwork-usw2-desktopapp.upwork.com -p 443
; <<>> DiG 9.16.13 <<>> @208.67.222.222 upwork-usw2-desktopapp.upwork.com -p 443
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32553
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;upwork-usw2-desktopapp.upwork.com. IN A
;; ANSWER SECTION:
upwork-usw2-desktopapp.upwork.com. 300 IN A 104.18.89.237
upwork-usw2-desktopapp.upwork.com. 300 IN A 104.18.90.237
;; Query time: 246 msec
;; SERVER: 208.67.222.222#443(208.67.222.222)
;; WHEN: Wed Apr 28 23:19:41 SAST 2021
;; MSG SIZE rcvd: 94
voila. at least it resolves the correct address with that DNS.
Now Iām not sure if you can also put a port number into the DNS settings in networkmanager.
maybe @Nachlese knows.
no, I donāt 
Iām just watching here, interested ā¦
Booom!!!
i changed the nameserver to 208.67.222.222 and it workedā¦
EDIT
But the strange thing is that i tried 1.1.1.1 and 8.8.8.8 earlier/yesterday and it didnāt work.
Should i mark it as solved or the error will come again?
So it looks like they donāt block port 53 per se, but only certains DNS provider addresses.
Can you do (Iām just curious now):
dig @208.67.222.222 upwork-usw2-desktopapp.upwork.com[chawila@devTool ~]$ dig @208.67.222.222 upwork-usw2-desktopapp.upwork.com
; <<>> DiG 9.16.13 <<>> @208.67.222.222 upwork-usw2-desktopapp.upwork.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32228
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;upwork-usw2-desktopapp.upwork.com. IN A
;; ANSWER SECTION:
upwork-usw2-desktopapp.upwork.com. 300 IN A 104.18.89.237
upwork-usw2-desktopapp.upwork.com. 300 IN A 104.18.90.237
;; Query time: 236 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Wed Apr 28 23:29:58 SAST 2021
;; MSG SIZE rcvd: 94
Ok, well, then just use that DNS server for the momentā¦
You mean i should leave it like this for now?