Okay, now I know what's the problem, it's related to the way the game manages higher numbers. I'll fix it in a future update. Thank you! And sorry for the problem
I get a similar error on Chrome in the same place so probably fixed by the same fix but just in case it's useful:
react-dom.production.min.js:121 RangeError: Invalid string length
at getAlphabeticSuffix (index.html:28:35) at formatNumber (index.html:48:18)
at Header (index.html:195:93) at mf (react-dom.production.min.js:105:412)
at zf (react-dom.production.min.js:127:55) at Qk (react-dom.production.min.js:251:489)
at Ri (react-dom.production.min.js:195:185) at Ok (react-dom.production.min.js:195:116)
at Nd (react-dom.production.min.js:194:492) at Qf (react-dom.production.min.js:187:439)