As you might know already, the flexM1 has a history of failures at the moment, and is being reworked:
In the meantime, if you’re certain the implants are broken, you should hit the orange help button on the DT main site as shown in the email (Looks like this: 
). That way you can get a support ticket started all proper like
I seem to recall DT wanting video of Flex series installs to verify the fact that no tools were used for warranty claims, but I can’t say for sure what they require on a case-by-case basis
I’d be interested to hear what you’ve tried with the implants, and maybe we could troubleshoot them a little and verify their broken status. Especially the NExT, as the x-series should be quite a bit more robust than the FlexM1