The email address issue is annoying. I have tried several (from PRs, OTC markets, filings, website) and haven't gotten a reply yet. Half didn't even work. It is one thing that worries me. I think calling may be the best way.
I thought I had tried vaughan@exosleeve.com, but I checked my sent items, and I never did.
I also more recently tried directly on their website through the contact us, by filling out the form (https://www.exosleeve.com/pages/contact-us). No reply from that either so far.
Let me know if you get a reply back from them (and which email address worked). Calling them may be a next step too.
Good product, great increase in sales, good share structure. Just the inability to contact them (so far) that bugs me.