I'm working at Home with my own computer, that is using Wi-Fi from my iPhone hotspot which is established based on 4G.
So I really didn't think this was an issue.
By the way, I downloaded the desktop version after posting, and it worked totally fine with google login.
Therefore, I do suspect this is not an issue caused by network or firewall.
Of course I do have a few ways to go around this issue, but clipping news from my Chrome is simply the only reason Evernote was chosen by my boss, and I don't always work with my own computer, but also on other computers (public, company, even friend's sometimes), so I really would like to use google login on the Web version to keep password memorized in my head as less as possible.
On the other hand, I sort of have a feeling I'm not alone, because the Error message in the screenshot actually says "Something is wrong, and I don't know what happened, please try again" when it is translated in English, and this sounds very odd to me.
I mean if you, Evernote, don't know what happened, how are you going to expect the users (mostly don't know computing like me) to know what happened and solve the issue by ourselves.