Can't connect to Mastodon

[Bapf]

Expected behavior

Successful Account Creation when connect to https://dice.camp/ (hosted by https://masto.host/)

Actual behavior

The following error message: "Client authentication failed due to unknow client, no client authentication included, or unsupported authentication method."

Steps to reproduce

• Select "New Account"
• Select "Mastodon"
• Input "dice.camp"
• Input Username & Password
• Input 2FA-Code -> Error Message

Extra info

All settings are on default:

• Auth type: OAuth2
• No version suffix checked

Android version: (version code here) 10

Network type:

• [ ] Cellular
• [x] Wi-Fi

App version: (version code here) 4.1.4

Build variant:

• [x] Google
• [ ] F-Droid

Micro-blogging service:

• [x] Twitter
• [ ] Fanfou
• [ ] GNU Social / StatusNet
• [x] Mastodon

App settings:

• [ ] Custom API
• [ ] Custom consumer key/secrets
• [ ] Official keys
• [ ] Using Thumbor
• [ ] Connected through proxy
• [x] Media preview enabled

[Tedko]

@jk234ert @Tlaster can u take a look