asset store and package manager have no react, and doesn't work.

hello guys,

i have a question?(problem) about Asset store.
If i want to open Asset Store in Unity Editor, then it does not work like below, i have attached.
not totally black, but i could not anything.

and if i click blue area, then i link to asset store homepage, and then if i try to “open in Unity” then automatically Project manager is open, but nothing. just blank box of Package Manager,(but few minutes later, Package Manager didn’t open anymore, no reaction anymore, although i did click “open in Unity” or direct run project Manager.)

how should i do for using Asset Store? and what is problem?

**** i have deactivated anti-virus Program and firewall(i allowed these ports in my settings: 80 and 443), and i did Speedtest(it is enough to download(over 100Mbps…))

Do you have any error messages in the console?