I need help with assembly

We try to respond to reports as quickly as possible, and we have also prepared a handy list of answers to the most frequently asked questions.

Before application

How to do it properly?
How to clean dust particles from your smartphone screen?
Applying protection to camera lenses. How to do it correctly?
Where can I have the product professionally installed?

During application

I can't remove the top layer with a Dust-Fix sheet. The sticker itself comes off.
There is no top layer in my product.
The product was mounted crookedly. Can this be corrected?
Application of protection to camera lenses. The glass was placed incorrectly on the lens, what to do?

After application

After assembly, there were a few air bubbles. How do I remove them?
How to safely disassemble the product?
Applying protection to camera lenses. What to use to remove protective glass?
Applying protection to camera lenses. I can't pry the Lens Protection Pro off to remove them. What should I do?