AERO not synchronizing

Aero files are not synchronizing. I have checked all possible options: errors on behaviors,  files and assets sizes, re-starting computer, shutdown computer, internet is working, check browser and the last one, checking if my antivirus app is stopping Aero or Adobe synchronizing files. I tested with minor changes for previous files, but nothing works. Nothing, Frustrating as I can't create a new experience because customers already have an innitial QR code that I can't change. Please help with this matter. V_0.24.4