Need refund, add-on does not work and no replies from developer

Images for Options add-on is not working with LiteCart v 2.6.0 and the developer is not responding.

How do I claim a refund (as indicated by the On-Demand Update Guarantee Program banner on the add-on page)?

Thank you, I have tried it and so far it all seems to be working. There seems to be some caching issues which cause some unexpected views, but looks like the vMod is doing what it's supposed to. Thank you.

View code on GitHub