Important notice for MathType Office Tools on Mac
MathType for Office Tools is compatible with macOS versions up to Mojave 10.14. It is not compatible with 64-bit versions such as macOS Catalina or Big Sur. Our team is working exhaustively to release a new MathType compatible with the latest MacOS, by August 2021.
Please also note that this incompatibility does not affect MathType for Google Docs and Slides, or MathType for Windows and Mac versions which accept 32-bits (up to Mojave 10.14.6).