Seeking Developer Feedback Before Submitting My HubSpot App to the Marketplace

I've been building a HubSpot integration and recently completed the OAuth installation flow.

Before submitting the application to the HubSpot Marketplace, I'd like to validate the installation experience with a few real users.

I'm looking for 3 developers or HubSpot users who are willing to test the installation and share honest feedback.

Current implementation

• OAuth 2.0 Authorization

• Secure access & refresh token management

• Automatic token synchronization

• Post-install success page

• Production-ready authentication workflow

What I'd love feedback on

• Does the installation experience feel trustworthy?

• Is the authorization process intuitive?

• Is the success page clear?

• Were there any unexpected issues?

• What would you improve?

Installation URL

https://hubappapi.seosiri.com/oauth/install

The goal isn't simply to increase installation numbers—it's to improve the overall developer and user experience before Marketplace review.

If you have experience with OAuth, CRM integrations, or HubSpot development, your feedback would be incredibly valuable.

Thanks in advance for helping improve the project! 🚀