I submitted a pull request (precision computation for Mask R-CNN), the first commit (finished 60/65 checks) had several minor issues (PEP8 style), which I fixed and added a new commit. The commit was halted by CircleCI, and the reported error was lack of macOS support (first commit was successful). Any suggestions? The error says:

Apologies! Your build didn’t run because you haven’t selected a plan that includes macOS yet. Please [change to a Performance Plan. ]. f you have any questions please feel free to contact support.