Canon BR-E1 remote blinking red when used with Canon Digital Rebel SL2: Bluetooth repairing

My Canon BR-E1 remote was blinking red when I tried to use it with my Canon Digital Rebel (DR) SL2, aka EOS 200D. Perplexity ai answers were all incorrect. This is a Bluetooth remote. The red blinking is an error code related to pairing. You probably need to repair, though it doesn't hurt tI o change the remote battery. Forget the web and forget ai, you need the PDF manuals for your SL2 and the…