[murphyjp]

As mentioned, first manually release the door from the opener and see if you can close it. If the door closes with no issue then you need to check 3 items.

First I would check the flags that the opener uses to know when to stop at the open/closed position. Look on the drive rail and you will get the idea. I had a wire break off one of mine and it did the same thing you described.

Second, check the alignment of the sensors, or just bypass at the opener. These are pretty forgiving as regards being aligned so unless you think there was a significant collision with one I may skip this and move to the next step.

Third, check the open/close force mentioned already.

Hope this helps.