If your model is a free trial, why offer this pricing option? Just let users sign up and try it out; if it's a freemium model, then you need at least two paid options: one that’s priced high with a smaller user base, and another that’s more affordable with a larger reach.
Hmm a few thoughts... First, def try moving the cookie banner so it doesn't hide pricing - that's a big UX issue. The free tier looking more appealing than paid could also be hurting conversions. I'd try highlighting benefits of paid plans more. Reaching out to engaged users who didn't convert could provide insights too. Simplifying the signup flow is also worth a shot if it's complex. Overall, I'd focus on removing friction, clarifying your value prop, and gathering user feedback to diagnose the lack of payments. Hope this helps point you in the right direction!