First, text them again. No need to wait if you want something.
Second, be cautious because if they’re this slow when you want to give them money, it’s likely worse when you need support.
Lastly, if you still want to engage with them, say it clearly in your message. They may get a lot of generic messages, so you can be clear about how it adds value to them. If you’re looking to resell their product, for example, you can say that in your outreach and a note about your audience, like “I have a retail store at X” or “a website with 20k emails.” This will help get their interest.
Have you tried a subscription model? Daily cums is usually more expensive than every two weeks/monthly.