Heiya Shirayuki, this extension seems to be broken somehow due to the translation magic. Supposedly only a few tweaks are needed to fluff this up. See SemanticSignup extension page for what I mean. Thanks and cheers
Topic on User talk:Shirayuki/Flow
Appearance
Thanks. {{Unmaintained extension}} should be replaced by {{TNT|Unmaintained extension}}, to transclude {{Unmaintained extension/en}} instead.
Ah, finally I get what this TNT is for. Yeah, thanks and fixed.