I'm surprised so many replies here are about removing a free tier 2 years ago. Things cost money, what did you expect? Whenever I get free products that cost money I expect it's either temporary, or I'm being the product myself.
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This is the bloody pricing page. If I as the CEO of a SaaS startup don't even know what our pricing page says I should step down. That's our offer, that's the most important page we have. Come on now. Writing "free forever" isn't something some rogue marketing intern does, this is a core positioning decision and something you'd absolutely be part of, if not leading, as the founder.