Web Compatibility Support • Re: Is Yahoo! Mail officially dead letter (extinct) with PaleMoon?

It seems the reason I can't login to Yahoo Mail is because Yahoo considers the 32-bit version of Pale Moon to be an "unsupported browser". However, I eventually managed to login to Yahoo Mail, but not through the "default" method. Instead, I used a workaround: I first loaded some expired Yahoo cookies into Pale Moon, cookies that I had saved before using the add-on "Yahoo Login with Encrypted Firefox Cookies".

Details:

1. The "default" method of logging into Yahoo Mail returns an error:

2. Using the add-on "Yahoo Login with Encrypted Firefox Cookies", I load the expired cookies in Pale Moon:

3. As expected, there is no login to Yahoo Mail. Instead, it opens a login page with the option to choose a different account. I click on that option BUT enter the credentials for the same account. By following this procedure, I successfully login to Yahoo Mail:

4. I run another test. First, I save the Yahoo Mail page URL to a text file. Then, with the Yahoo Mail page opened, I use add-on "Bypass Cloudflare with Saved Cookies" to save the Yahoo cookies.

Next, I close the Yahoo Mail page, clear all cookies from Pale Moon, load the Yahoo cookies (previously saved) into Pale Moon using the add-on "Bypass Cloudflare with Saved Cookies", and try to open Yahoo Mail again using the URL https://mail.yahoo.com/ . Surprise: instead of opening the Yahoo Mail Inbox page, a page with the URL https://mail.yahoo.com/n?.src=ym&reason=myc opens, telling me that "Pale Moon 32-bit" is an "unsupported browser". I’m given a link to access Yahoo Mail ( https://mail.yahoo.com/b/?.src=ym&reason=n8_unsupported_browser_trap&toB=2&ncrumb=behy5kDq/IA ), but the email service can’t be used: the first time I click an entry on that page, I am redirected to the page with the "unsupported browser" message:

Note: If I load my previously saved Yahoo cookies into Pale Moon using the add-on "Bypass Cloudflare with Saved Cookies" (see point 4 above) AND use the Yahoo Mail URL I previously saved in a text file (see point 4 above) instead of the URL https://mail.yahoo.com/ , the Yahoo Mail Inbox page opens - and this time it works just fine.