iCloud tabs not syncing/working

iCloud Tabs has stopped working on all of my devices

iCloud Tabs isn't working on any of my devices. I can't see them from my MacBook Pro (macOS Catalina), nor from my iPhone X (running 14.2). I have quadruple checked and iCloud is on and Safari is checked and everything is correct on each device. It was working fine up until I noticed the issued several days ago. I haven't changed any settings or behaviors or changed any features, but for whatever reason it isn't working anymore. And if it does, my computer shows iPhone tabs from the day before and not current tabs and my phone doesn't show my computer tabs at all anymore. Although it's small, it's a feature of iCloud that I use quite often and it's a nuisance to have it not working properly.

I followed all suggestions on forums and articles to turn off iCloud, turn off Safari, etc. on each device and turn it back on but still nothing. I've restarted and rebooted a plethora of times and it's still the same issue. Does anyone have any insights on what could be causing this issue and how to fix it?