The first section of the FormulaShare Setup page provides a summary of the total number of rules and records shared, as well as the limits which apply in your version of FormulaShare:
Note that the number of records will be assessed during full recalculation batch or Targeted Scheduled Job processing and doesn't update in real time when trigger or flow operations apply sharing.
For information about what to expect when one or more limits are reached, check the Version Limits section of this guide.
Check the comparison of versions available or contact formulashare@cloudsundial.com to understand more about upgrade options or to switch versions