I bought two Dunlops last August, and had the tire dealer mount them. Filed rebate, and never received the dough. Inquired to Dunlop and their response was that "we never received your rebate application".
I did that route also. Somewhere on this forum exists a thread on this subject with the person in Buffalo I contacted to get the rebate. After contacting that rep, I rec'd my rebate in 2-weeks. That was after an 8-month wait. The previous rebate program I participated in was a disaster from A-Z. It was the one in mid-2018.
I Bought 2 sets of tires last year from Bike Bandit and sent in 2, online Dunlop rebate forms with screenshots of the receipt. Can't remember how long it took but I got both rebates. They have a website you can check the status of the application.
I love the look of the RWL. Reminds me of the old FX of the 70's and 80's. Up until now I always thought RWL look like they belong on FXR, Dynas and Sportster. Thanks to the OP, I add the Street Glide to that list.