Bugfender is a write-only platform, meaning once written, logs are never deleted (until they fall out of the retention period and expire).
However, you may want to separate your development from your production logs. In order to do that, you can create multiple "apps" in Bugfender, with different App Keys, that you can exchange with conditional compilation.
Some of our customers even separate further depending on their release process, they might have UAT logs, integration logs, etc.
Users who have signed a GDPR Data Processing agreement with us can contact us to delete logs.