As you can see I have managed to mess up the design: the wrong footprint was used in the final version...

Conclusion: always print the gerbers to paper, and verify the footprint of the unverified critical components.

Or do not use components from vendors who is not capable of creating a datasheet for their product. Yes I have not been able to find mechanical dimensions for the YJ-14015 module. If you are smarter than me in finding this please let me know.