Error HTTP 400 when using DFX
**Describe the bug**
I'd like to buy some monero, but the connection with DFX, wich is the only available provider, fails at every attempt.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to "exchange"
2. Introduce any FIAT amount.
3. Click on "choose a provider".
4. Select DFX, wich is the only choice.

**Expected behavior**
Redirection to an exchange platform where i can buy XMR.

**Screenshots**

![Image](https://github.com/user-attachments/assets/2ad917d2-c165-4d40-9f7a-033813db7afa)

**Platform:**
 - OS: android 13
 - Device: fairphone 3
 - Cake Wallet Version: 4.23.2


**Additional context**
In happens in desktop too.
