I use Zelle through the BoA small business account's web interface, there is no charge. I tried getting Zelle API access through US Bank but they never replied

I use Zelle through the BoA small business account's web interface, there is no charge. I tried getting Zelle API access through US Bank but they never replied so I'm stuck with BoA web. Payoneer is really cagey about how you unlock better features, our account got upgraded to VIP though because we pay a lot through it. We still use their interface, maybe I'll figure out how to get their API someday