i went to my lightroom mobile app today and it asked me to sign in (which I never have). All of my photos seem to be gone, and now it shows that I am using nearly almost all the storage. Not sure what happened here. Thanks.
Whatever you do, please don't uninstall the application.
If you had other Adobe apps with an active login you should have been logged in with Lightroom Mobile too. Meaning if you can see the missing images in https://lightroom.adobe.com it means that you need to login to see them in the app.
Thanks for the help so far. So I was able to login through Facebook and see some of my photos up through 2017. I'm not sure if this is what I had used when using Lightroom mobile or if it was my email, but I'm missing a lot of photos. Is it possible I didn't create an ID when I first installed the app?
I assume that you experienced this on a mobile device too. If you are using a paid account your presets should be there once you log in again. If you uninstall the application without an paid account; everything from the app will be lost. So reinstalling won't bring any images taken with the Lr Camera or presets back.
When you mention "gray" - were they gray or with the text grayed out (disabled)?