Welcome to the club! Some general feedback (viewing on desktop):

• I'd think about reducing the CTAs from two to one
• I think the CTA copy could be improved for the buttons
• The subtitle is pretty long! I'd try and cut this down to something more bitesize
• Going to /register and then pressing back gives you "Application error: a client-side exception has occurred"
• Some of the spacing seems a bit off, I'd play around with making it flow better
• Seems strange to name the plan "Pro" when there is only one plan
• IMO having "How does it work?" before "Clients Results" makes sense
• Link to the articles in "Featured In" by clicking on the logos
• Text in FAQ answers should be left aligned
• Should "Start Sending Pitches Now" button go to register page?
• Missing legal policies and an email address

Quick one because I had to go:

• There's an exception when I visit www.backlinker.ai can't reproduce it.

• In the email, "Click the link below to login to Backlinker..ai" has ".." instead of "."