Landing page looks excellent on mobile.
I clearly see what it does and how it's useful.
The video is clear and concise (but a bit slow and low-energy. Consider getting a professional voiceover artist on Fiverr or Upwork to redo your voiceover).
The demo looks great and works on mobile.
Some thoughts while using the demo…
Using the tool, on mobile, as I'm entering a suggestion title, if the title is too long it's not scrolling horizontally left or right to let me backtrack and edit it down to make it fit.
Sometimes—not always—businesses may wish to restrict the ability to upvote suggestions only to signed-in users. That way, the business can reach out to the people who suggested as well as those who upvoted a feature for more information, suggest a workaround, or to let them know status/progress, and to let them know that the feature has been finished so you can ask specifically those people to beta test the new feature before releasing it to all your customers. Not all businesses would care about this, which is why maybe it should be an option in a settings screen somewhere. (This one I added as a suggestion in your demo feedback area, so you'll see it in your moderation queue). Or, instead of forcing sign-in to upvoters, allow them to add contact info as they upvote, maybe a prompt appearing after they upvote where there's a checkbox that says "notify me" and prompts them to add an email, or something similar.
Another idea: I'd love to see a way for the suggestion submitter and the upvoter to indicate if the submission is an issue that is holding them back from buying. Something simple, and not too involved. Maybe one of the fields to fill out as you're creating a suggestion is a checkbox to indicate “This is preventing me from making a purchase today” or words to that effect. And maybe this indication is not shown externally to customers browsing the feature suggestion lists (the feature would still be public, but not this one tag). This way, only the business can see that this is a feature holding this user back from buying (or holding them back from upgrading their account, or converting from free to paid, or what have you). Also, as people are upvoting, after they upvote, maybe a checkbox or something appears allowing people to also chime in that yeah, this thing is preventing me from buying today. And if there's a way to capture the contact info of this upvoter at this point, so much the better.
Here's a question: are these lists of feature suggestions indexable by Google? Can that be an option? Allow the business owner to decide if Google can or cannot see these.
As a business, can I add tracking pixels? I might like to have my Google, Fb, or Drift tracking code on my feature suggestion pages.
Alright, I'm rambling.
I love the product thus far! Great work, and best of luck.