lightroom cc desktop to mobile sync error

Hello!

Since 1,5 month my lightroom cc desktop wont sync to my mobile. Before that time it would sync immediatly but now it wont.

I upload my pictures on my desktop and i want to view them on my mobile after processing to share with social media.

The spinning wheel is spinning ''syncing XX photos'' and i will not change. I got latest versions on both desktop and mobile.

Who can help ?

Thanks a lot.

Wessel