As a SW Engineer I give you two feedbacks about the frontend you published.
1) Introduce the cookie policy message. This may sounds "stupid" but it's crucial to have it when you advertise a website on a large set of user (like the potential one on this forum). It's just a javascript that can be easily imported into your web application but it will definely save you from legal problems in EU.
GDPR and cookies:
https://gdpr.eu/cookies/Example of script:
https://github.com/orestbida/cookieconsent2) Usage of alert messages is discouraged for different reasons:
- Many scam websites uses alert to show you trash messages and your users can have alert blockers to prevent display
- Modern browsers (such as chrome) provide a native block to alerts.
I attach a link of your alert image
Consider a redesign, maybe with a dismissable block or consider to have the form filled with pre defined fields