Welcome to the forum, kdame.
There is a tab on the slide release lever that the magazine pushes against, and I am willing to bet that it is bent up slightly.
I do not know what your level of gunsmithing ability is. It is not too difficult of a job to replace and Ruger will send you a new lever and spring BUT
They could also email you a FedEx overnight shipping label and you can send it in to them and have it back in probably no more than a couple weeks.
You might as well let them take care of it on their own dime and let them pay the overnight shipping both ways.
Their customer service is top notch. Go ahead and take advantage of it.
Doc