Wheeltop Eds-tx rear derailleur no longer works at all

[Ilianleboss]

Hi all,
I have a problem with the Wheeltop electronic rear derailleur on my road bike (Twitter). At first when I changed the gears it changed them two times out of three and suddenly it didn't work at all, it doesn't react either via the app or with the shifters, even though the green LED lights up. The front derailleur works normally, and everything is fully charged.
The big problem is that I can't get the warranty to work at all:
- The seller doesn't respond.
- Neither is the Twitter Bike representative.
- I contacted Wheeltop, who referred me to Twitter Bike.
And they too don't respond, even after several reminders.
Have any of you had this problem?
Have you managed to invoke the warranty or find a solution? I'm a bit stuck...
Thanks in advance for your feedback!

Link to the video showing the problem : https://drive.google.com/file/d/1FB2colB2K7PXF_BxsT-_q1T62XihkQpR/view?usp=sharing

[SometimesFast]

On YouTube there is a guy named Trace Velo that I think has played with this group set. You might want to ask him for advice.

[glepore]

Hi all,
I have a problem with the Wheeltop electronic rear derailleur on my road bike (Twitter). At first when I changed the gears it changed them two times out of three and suddenly it didn't work at all, it doesn't react either via the app or with the shifters, even though the green LED lights up. The front derailleur works normally, and everything is fully charged.
The big problem is that I can't get the warranty to work at all:
- The seller doesn't respond.
- Neither is the Twitter Bike representative.
- I contacted Wheeltop, who referred me to Twitter Bike.
And they too don't respond, even after several reminders.
Have any of you had this problem?
Have you managed to invoke the warranty or find a solution? I'm a bit stuck...
Thanks in advance for your feedback!

Link to the video showing the problem : https://drive.google.com/file/d/1FB2colB2K7PXF_BxsT-_q1T62XihkQpR/view?usp=sharing

Never mind, see that you've tried the app...