does anyone else feel like a fraud putting up a page for software that doesn't exist Fake Door

Write it as yourself and the discomfort mostly disappears. "We're a platform that empowers teams to..." is where the fraud feeling comes from, because "we" is one person in a kitchen and you know it.

"I'm building a tool for X because I got tired of Y. It is not finished. Here is what it will do." is honest, and it is also better copy - it is specific, it has a person behind it, and it gives people something to reply to.

The feeling is useful and it has a clear line in it. Two questions:

1. If everyone who signs up says yes tomorrow, can you deliver something to them - even a slow, manual, ugly version? If yes, you are not lying, you are early.
2. Are you taking money against a date you cannot hit? If yes, that is the actual problem, and it is fixable by moving the date or not charging yet.

Everything else is presentation. Where I would change yours: label the screenshot as a mockup, and put one honest sentence at the top - "I am building this. Nothing is live yet. If you want to shape it, leave your email." It converts about as well in my experience, it filters for people who want to be involved rather than people who want to buy today, and you will feel completely different about it.

The pricing table is the part that bothers most people, including you. Either make the numbers ones you intend to honour, or take it down and ask what they pay today instead.

Also, tell the signups the truth in the first email. "There is no product yet, I wanted to know if anyone cared before I spent three months on it, thank you for caring" gets replies. People like being early to something more than they like being sold a finished thing.

Everyone feels it. It goes away the first time someone replies asking how much it costs and when they can have it, because at that point you are not performing interest in a fake thing - somebody actually wants it and now you have a job.

The discomfort comes back if you leave the page up for a year without building anything. That is the version worth avoiding.

One concrete thing: put a real date on the page, even a vague one - "first version in the autumn". A fake door with no timeline is what people mean when they call it dishonest. A fake door with a date is a pre-announcement, which is what half the software industry runs on.

the screenshot you made in figma is going to be nicer than the app you ship and that is the real crime here.