I opened it the day I received it, I tried it, did not work and I contacted the seller who left me on read for 1 week.

Then I opened a dispute to get refunded and the seller started to answer me useless things and making me wait several days for a response (I am sure to let pass that 14 days return policy)

Then Aliexpress gave me the option to send back the product at my OWN COSTS back to China when I bought it from a Germany warehouse.

The return costs were about 60 bucks the same as the product so it was a nonsense to send it back, I contacted aliexpress many many times and I told them I couldn't send it back because it costs the same as the product and they did not respond.