If you did not change the the board language to English at registration you can do so in the user settings. That should make some things a bit easier.
Persönlicher Bereich -> Einstellungen -> Persönliche Einstellungen [already selected] -> Meine Sprache: -> British English
(User Control Panel -> Board preferences -> Edit global settings [already selected] -> My language: -> British English)
This also affects the language of the bugtracker interface, but of course not the reported bugs.
The same bugs may -and probably will - be reported for both language versions. But that should be preferable to losing bugs in various forum threads. Bugtracker admins&moderators can mark bug reports as duplicates of other bugs. Also some old bugs seem to resurface in the en version.
@Lisnpuppy
Google Translate seems to work, just copy and paste the URL into the form. It may be necessary to tell it that it should translate from German to English if auto detect does not work.