That sounds like a good problem to have! I wouldn't worry about it--the point of a jelq is to push the engorgement up the shaft. You don't need to fully encircle the shaft to do that.
And for those asking about the Oxballs products, just go to their website (oxballs.com). It's got a lot of gay imagery, but their cockrings are so good it's worth ordering from them even if you don't want to see that stuff.