Ancestry.com stuck on mobile version using desktop Safari
I've been using Ancestry.com on Safari on my MacBookPro for years. I'm currently using 10.15.16 MacOS.
Suddenly Safari will only show the mobile version of Ancestry's website. Despite clearing the cache and cookies for all Ancestry.com websites and rebooting, now every link to Ancestry only shows the mobile version. Every non-Ancestry.com website operates normally, showing non-mobile version.
On Chrome it shows the normal desktop version. Ancestry.com's support pages and staff are useless for this issue. I would rather not clean the cache and cookies for all of Safari as I'd lose useful shortcuts for hundreds of other websites. I wonder if Ancestry thinks I am using an iPhone due to a cookie from another website without the ancestry name, if I could only find that, I could delete that cookie.
Any suggestions appreciated! Thanks.
MacBook Pro with Touch Bar