Dropbox on my laptop

Hello Andrea,
We are extremely sorry to keep you informed that the AVG Performance program will never conflict with the functionalities of the Dropbox. However please follow the instructions below to restore the changes made by the AVG PC TuneUp program :
1. Open AVG PC TuneUp program.
2. Click on the Rescue Center on the right bottom corner.
3. Click on Undo Changes.
4. Select and restore the changes made by the AVG PC TuneUp program.
If the issues persist please contact Dropbox support so that they could analyze the issue for you.
Thank you.

Hello Andrea,
We are extremely sorry to keep you informed that the AVG Performance program will never conflict with the functionalities of the Dropbox. However please follow the instructions below to restore the changes made by the AVG PC TuneUp program :
1. Open AVG PC TuneUp program.
2. Click on the Rescue Center on the right bottom corner.
3. Click on Undo Changes.
4. Select and restore the changes made by the AVG PC TuneUp program.
If the issues persist please contact Dropbox support so that they could analyze the issue for you.
Thank you.

I seem to have turned off Dropbox from my laptop - in that the photos I load up to Dropbox are there when I look online but do not come into the Dropbox folder on the machine - I think it's something to do with me having switched it off during the performance optimisation process even though it's listed on the righthand side as do not switch off. 
Hopefully someone knows what I'm talking about!?!
Andrea