Sorry you had that experience Chris, but it's one that will probably be repeated regardless of where you buy your e-liquid. I think I am at about a 10% success rate when buying store bought e-liquid with maybe another 20% that I didn't mind but wouldn't order again and the other 70% that I didn't like.
Finding e-liquids that you enjoy consistently is probably the 'hardest' part of the
vaping journey, and one of the most expensive. There is nothing worse than ordering $80 worth of e-liquid to discover you only like 10ml of it.
So while I appreciate that Zamplebox can work for some people, I would say why not use that cash to try out different vendors that offer sample packs. Purchase a little of each liquid that piques your interest and try them. If you do the leg-work yourself, you'll save a bundle, and probably end up trying more e-liquids. I'd recommend heading over to the e-liquid subforum for ideas on vendors and flavors to try,
Maybe I am being too quick to say stop the Zamplebox, perhaps don't be too discouraged with your first experience - maybe give them a few months to see what happens. It's up to you. It's convenient for sure...
Of course then there is the DIY rabbit hole which you can start reading about in the DIY subforum.