Lightroom on desktop keeps asking me to log on but then doesn't work on macOS

Hello,

I literally can't find anyway to contact Adobe via it's website on this issue that isn't calling, my phone isn't working right now. 

I have been abroad for 14 months and haven't used lightroom on my desktop for this time. I have now returned home and tried to load Lightroom on my desktop. It keeps loading, asking me to log in, I log in and it relaunches, and then asks me to log in again. I have tried logging in 5 times (and changed my password). It's not working. What do I do? 

I have been using lightroom on my phone for 14 months and its been fine, but if its not working on my desktop I can't see the point of keeping it and continuing to pay for it.

Lara

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