need help with updating course

Tricia, at the very least, you might consider downloading a trial copy of Storyline, then making the changes that you need and republishing the course output. I believe the trial copy is good for 30 days. The downside, of course, is that (1) it's a very short-term approach and (2) if you are not familiar with Storyline, you may not be successful in making the "small changes" you need without also creating additional problems for yourself.

However, since you have engaged iSpring to make updates, I would suggest deciding on what you (organization/business) want to support going forward, so you will have the ability to make updates in the future as well.