Unusable in Mac OS Sierra

Ive loved playing this game for years, but when I upgraded to Mac OS Sierra, the numbers in the counters are blank. You cant tell how many swaps you have, thus rendering the game unusable. Their web site has no link for support or feedback, so Im hoping theyll see this and fix the problem.

mcirino about W.E.L.D.E.R., v4.1.2