On Fri, 03 Feb 2017 22:14:03 GMT, kdp
m wrote:

I had a Larson storm door with 3-point locking system installed about 1 1/2
years ago. The bottom latch stopped retracting without warning and therefore
door cannot be opened
I wonder if anybody had same problem and how was it fixed?

Yes. You did. Ordinarily; a person uses tools to fix or replace the
bad latch. Did you try chicken grease for a lube?