Hello Marcin

I'm sorry to hear that your Firefox sync is giving you problems. Together, let's try to solve this problem. To begin with, make sure you are running Firefox 115.0.3, which is the most recent version. Please allow sync some time to fully restore all of your data since this can occasionally happen. Try logging out and then back into your Firefox account if the issue continues. Additionally, make sure your sync settings are set up properly. After following these instructions, if you're still unable to see your data, kindly let me know so that we may look into the problem further.

Regards, Suram.

Hello! Unfortunately, everything has been done as you explained and it doesn't work.

Reagrds, Marcin Markowski

Hi

Thank you for your question about the Firefox Sync service.

It appears from your question, that you are using Firefox Sync as a back up service. This is not what Sync is designed to do. The Firefox Sync service takes a copy of the data you wish to include and transfers it to a second device (typically a mobile device such as a tablet or a telephone) running a copy of Firefox. The storage in between all attached devices is both temporary and fragile and is not stable enough to be (and is not designed as) a reliable backup service.

If you have a copy of your Firefox profile for desktop Firefox, you may be able to recover your bookmarks and other data. Please have a read of this article.

If you have a copy of your data on a mobile version of Firefox, please follow these instructions to connect it to Firefox Sync to copy your data.