Wouldn’t it be awesome if Wix added a feature that would enable new customers to apply a coupon code to their first month when purchasing a paid plan? I noticed this was talked about in the forum’s in August earlier this year and wasn’t discussed further. I believe this is a great idea for websites with paid plan’s.
There is a feature request link here where you can vote for this: https://support.wix.com/en/article/pricing-plans-request-creating-coupons-or-promotions