In situations like this, I have found it necessary to delete LR Mobile from my iPhone and reinstall it. This will delete your LR Mobile photos from your phone and they will have to be synced which can take a while depending on how many photos you have on LR Mobile.
You might want to wait for other suggestions before taking the above step, but it will most likely work if nothing else does.
Hi, thank you, but my problem is not on the phone, but on the PC.. I cannot login and syncro my collections from my Pc..
I don't understand what you are trying to do!
You do not "login" to Lightroom Mobile on a pc. (except- see 2. below!)
Lr Mobile, simply put, has three components-
1. The working catalog (on the pc or Mac). Where you mark Collections with the Sync option and photos sync to the web.
2. Collections on the Web (after syncing). Where you CAN login from a browser (on your pc) at- https://lightroom.adobe.com
3. A mobile device, iPhone, iPad, etc, with the mobile App installed.
Please explain exactly what you are trying to do.
"You do not "login" to Lightroom Mobile"
... yes you do! After the "get started with Adobe Lightroom". And I have the same problem - the window keeps appearing and disappearing without ever logging me in.