I ordered some glue on E-Bay from China - waited - complained, got the refund. Re-ordered from UK and tried it straight away on two spectacle arms that had broken in the same place (separate instance). The repair looks OK but are sitting in the window for the 24 cure and to get more UV, they should ideally be outside without glass attenuating the UV, but...
There is no hurry - I bought a pair from Germany (the only place I could) and transferred the red arms. Mine were a monochromatic amalgam to order, including lenses.
Now I have back-up, dancing is not a non-contact sport!