[BTCPay app issue] Payment could not be created

[twofaktor]

Issue Summary

The integration with the BTCPay Server payment gateway is not working correctly.

Steps to Reproduce

1. Select the day and hour to book
2. Fill the form
3. Push on [Pay to book]

Actual Results

cal.com throws an error: Could not book the meeting. Payment could not be created.

Expected Results

That should generate a QR code with the BTCPay Server aesthetic so you can pay in Bitcoin.

Technical details

To take into account:

• I'm using the official hosted version of cal.com (https://app.cal.com)
• I've tried booking with different browsers and in incognito mode: (Brave, Chrome, Firefox, etc)
• I tried renewing the API connection with my self-hosted BTCPay Server
• It has been working properly for a while now without any problems
• I haven't made any recent updates to my BTCPay Server, nor any change on my part that might lead me to suspect that it stopped working
• I'm not sure if it has to do with the lack of availability of: https://cal.com/api/book/event .... Have there been API changes that have caused the BTCPay app to stop working?

Evidence

[linear]

CAL-6815

[twofaktor]

Have there been any changes to the cal.com API that have caused the BTCPay app to stop working?

Ref: btcpayserver/btcpayserver#6715

@TChukwuleta @pavlenex

[twofaktor]

Ok, solved! That was a Cloudflare block, since I have some custom rules to block some attacks that I have been receiving recently on my domain. Thanks for your support @TChukwuleta 🙏