After a while and being exposed to an open space, covered, they have yellowed quite a bit and additionally, the colors are "playing". While it is set to white, for example, there are scattered lights that turn on in another color, randomly.
But for the job I have them for, they are satisfactory.

In a few words, it doesn't work...
All the connections were made correctly, even an electrician checked it... and still nothing.
It is likely a problem with the remote control, but the result is the same: I can't turn them on.
Also, we are talking about a complete lack of instructions... It's like "guess and do, it's obvious"...

First day with the LED strip and obviously I didn't expect anything remarkable for its price, but:

Positives:
Quite cheap for a 5-meter RGBW.
All colors and brightness levels work.
Nice vibrant colors.

Negatives:
Very cheap adhesive, to the point where additional double-sided tape or extra glue is needed.
Brightness changes from one end to the other, meaning it's brighter near the power source and half as bright at the other end.

A decent purchase for a nice decoration, I will comment on the tape's performance in the near future in this post

Negatives:
-Cheap construction of the power supply and receiver
-Small power supply cable
-Limited range of the remote control, approximately 5m without obstacles (many times it doesn't even give a signal)

Positives:
-Fairly bright
-Relatively good colors
-Moderate white (from a close distance)

Always based on its price.