Ep3 keyfob

20210118_035014.jpgI want another key fob remote for my ep3. I found somewhere to send Hamilton and palmer an email but they didn't get back to me I'm not sure if they are still going. I have a square type keyfob but when I search for a replacement even on honda parts list it comes up with another type. Why is mine square and can I replace it with the longer rounded one? Any help appreciated.20210118_034909.jpg