Can't synch comments and highlights in a document to other devices

Yes I have a similar problem. I need to study from my phone and I highlighted a whole PDF and when I uploaded it to Adobe Cloud so I can read it from my PC it's not highlighted anymore. I tried uploading it to Google Drive, and to dowload it to my phone so I can send it but the highlights only appear to be visible on my phone. How can I solve this? I would really need to see it in both devices.