Problems syncing between Macbook and Android

Hello,

I've always used Firefox, and have had whichever Macbook and Android devices I've had synced for years. I recently got a newer phone, had an issue, returned it and got the same model. Since getting the new phone, Firefox not only takes hours to properly sync to be able to even see my Macbook's tabs, but I can't even send myself links from Macbook to my Android phone. Password and bookmark syncing is also spotty. I've tried signing out, made sure these are the only two devices on my account, and I've uninstalled and reinstalled. It's been this way through many updates for both my device and Firefox. I use both devices interchangeablely and it's critical enough to me that I may switch to a different browser. Any help would be appreciated.