Lightroom synchronisation

Hello everybody,

I have problems with the sychronisation from Lightroom on my laptop and my mobile phone.. the pictures are uploaded in Lightroom but they don't synchronize.. they are always loading.. the internet is ok, I stopped and started the sychronisation but nothing happens. The pictures will not synchronize with my phone I don't know what I can do I always did it that way it is not my first time using lighroom please can someone tell me what to do ?

Thank you so much