PIONEER AXD7306 - remote control duplicate

I got the remote as a replacement for my Pioneer L11 stereo. System purchased it was back in March 2023 and has been working wonderfully up until the last few days. Although not used daily 3, nearly 4 years extra use of my system has been great. Have reached out to the company to see if they can give any tips on how to get it working again but very happy with it right up to a few days ago. Would highly recommend.