Congratulations on launching! A couple of quick nits that come to mind:
1. On the pricing page, you seem to use commas (',') as decimal separators despite the price in USD. In the US, a period ('.') is customary as a decimal separator while commas are used to separate groups of three digits, ie: 100,000.001
2. Pricing itself: free should just show "$0" without decimals; on that note, for a professional tool, flat numbers would be preferable. Also, the text should either say "per user per month" or "/ user / month".
3. Plans: I think you should limit the professional tier a bit more and decrease the price slightly; in other words: leave minimal branding on it, only allow say 10 new projects / month, don't give SSO, etc. Businesses that drive any meaningful revenue will have no issue whatsoever paying real money for critical features like no/custom branding, unlimited projects, Single Sign On (SSO is required at many companies), 2FA, priority support, custom billing (20+ users), etc
4. Plan pricing: if you follow #3 above, I'd say rename the professional tier to "Pro" and charge $7/mo; rename the business tier to "Enterprise" and charge $20/mo.
5. Contact: perhaps provide an email address where people can more easily get in touch with you if they don't want to use the form.
6. Put a video showing the product on the front page, it'll be helpful for users to better understand the utility of your software.
Hope this is all helpful and congrats again on launching!!!