The biggest concern I have is what you wrote about Facebook and Google.

To win in advertising, you must fail. That's more than a snazzy saying, it's the reality that makes many people quit before seeing any favorable results. :)

If I was working with you, I'd ask to review your results on those Facebook ads.
Those metrics have a story to tell you.
You'll find out what didn't work and where to go next.
Did you do any split testing?
Did you let your ad reach enough people before it was deemed "Unsuccessful"?
Did you have your buyer persona written out in detail?
Did you research the "competition" at all?
Did you take advantage of the rich targeting features to hone in on the best, most qualified buyers? (You can't get this functionality anywhere else in the world right now)

Facebook dark posts still work,
They are very effective, especially for folks with smaller budgets. I primarily work with Solopreneurs (one man shows) and they don't need to spend $1000's of dollars to get real results.

Advertising and social selling in general is a process that should be scaled up over time as it makes sense to do so.

By the way, I love the site. It's clean and classy. Not exactly what I think of when I think "hipster" but that's not your major problem right now.
Getting those first customers is the main issue.
Everything else will seamlessly come together as you acquire paying customers.
Like Mark Cuban says, "Sales are the cure all."

So in order to keep afloat and moving forward, I strongly suggest digging into those metrics and giving Facebook an intentional shot with a new focus.

Instagram will be rolling out ads soon, you could start to build up your following there with minimal effort daily so you can test ads when they open up for business.
Pinterest is another big traffic gold-mine that would be a fit for your brand and demographic.

Yet, I say-- review the metrics that you already have. They've already got a story to tell you.
Then, go from there with one solid plan to stick with until you can honestly rule it out as ineffective.
If you want to chat on this, I'd be happy to. This is my sweet spot. :)

Best wishes to you and Congratulations on your new venture.