Lazarus 2.0.6 is an official release version on the download page of the Lazarus website.
The fact that the only downloadable Lazarus IDE release for macOS is itself 32 bit and uses the 32 bit Carbon widget set does not prevent you from compiling applications with other widget sets like the 64 bit Cocoa one or, indeed, having the Lazarus IDE recompile itself to use the 64 bit Cocoa widget set.
The Cocoa 64 bit widget set is officially supported as detailed in the release notes for Lazarus 2.0.6. I don't think it can be made any clearer than that.
There is either: a (human) language communication problem when communicating with Devart or Devart is being disingenuous. I suspect it is much more likely to be the former as their website appears to be hosted in Germany and their domain registration appears to have been done in the Czech Republic.