I've been using namecheap for a while now with chrome. Haven't ever faced any issues that you mentioned above. It seems to be a local issue at your end.

I have never had a issue with chrome on namecheap
you might want to make sure no extensions are disabled in chrome.

You should try to login with Incognito Window. If it works, it must be from some extension you are using.

Works fine to me in chrome , just checked with new and old versions .. just clear cache and cookies ..or upgrade to new version of chrome

I use namecheap as seldom as possible, but have never had an issue using Chrome to browse their site.
It's likely the version of Chrome, or your extensions that are causing this issue, not Namecheap specifically

No issues here either.

This thread was started almost a year ago so I think it's a fairly safe bet that, if there was an issue, it's been resolved .