URL links failing periodically
I have three training courses on an internal website for employees to use for annual training purposes. After passing the final quiz, they click a "finish" button to go to a survey, where they can enter their name to show they successfully completed the training.
The problem is that in some cases, the user clicks on the "finish" button and goes nowhere. The link is correct. I checked my original files and the "Finish" button should get them to the URL for the survey. Sometimes it does and sometimes it doesn't. Several people recently experienced the unlinked "Finish" button and yet I see that several were able to get through to the survey today..
Has this happened to anyone else?
I don't know what to do to correct this. If I republish and re-post the courses and it works, what's to say it won't stop again. I really need to know why this is happening.
Thanks for any help or ideas!