Landing Page Avis - RECOVER

Interesting premise, I like the design & illustrations. A note for you, there's a typo at the bottom: "Personnal". Btw, if you're looking for more opinions, I've got a service where for $12 you can get another 50 people to look at your site. If you're interested you can check it out here: https://scoops.io/

Yor landing page looks good! There are a couple of things I would do to make it better. I agree with Tpf that the headline text is huge - I would shrink all the header copy down 10 px .

For the hero image I would change the colors to bump up the contrast - go here https://duotone.shapefactory.co/?f=10c5f8&t=6736dd drop your image and change the contrast.

Interesting idea. Here are my thoughts, fwiw -

1. I have a lot of respect for anyone launching a product in a non-first language so take this feedback with that in mind - the English usage on this page needs polish in order to build and sustain credibility.
2. The masthead (big header) was a bit puzzling, then upon scroll down I said 'oh, QR codes, hmm, that might work' so you might consider moving a smaller version of the 1/2/3 above the fold and refining the headline message to be more action oriented -- "Lose something? Get it back." 1. Generate a QR code with Recover, 2) Stick it on your valuable. 3) Next time you lose it, get it back and pay a reward. Etc. IDK, you need to massage this a lot.
3. I wonder about getting the QR code actually stuck to my things -- tape? or what are you thinking?
4. Think you'll need some conventional payment scheme in order to sustain sufficient interest in such a service. What if a finder sees the QR code with message and then checks it out and says "What is this crypto stuff, what a headache" then doesn't return the thing? Your engagement loop breaks. So for the landing page, I think that part of the message needs some thought.

HTH
Tpf