From Trezor Wiki
If you are a non-technical user and you want to report an issue, please use the Support Center.
Technical users and developers with a GitHub account may report issues directly in the following GitHub repositories.
- Trezor website https://github.com/satoshilabs/trezor.io/issues
- Trezor One https://github.com/trezor/trezor-mcu/issues
- Trezor Wallet https://github.com/satoshilabs/mytrezor/issues
- Bitcore (Insight) https://github.com/satoshilabs/bitcore-deb/issues
- Trezor Model T https://github.com/trezor/trezor-core/issues
- Trezor Bridge (v2) https://github.com/trezor/trezord-go/issues
- Trezor.js https://github.com/trezor/trezor.js/issues
- Trezor Connect https://github.com/trezor/connect/issues
- Trezor python-trezor - https://github.com/trezor/python-trezor/issues
- Trezor Password Manager - https://github.com/satoshilabs/password-manager/issues
- Trezor Bridge (v1) - Development has been discontinued, please use Bridge v2 or WebUSB.
- Trezor Chrome extension - Development has been discontinued, please use Bridge v2 or WebUSB.
See also Developers guide