The two following sentences, displayed on Special:EditGrowthConfig where the structured mentor list is deployed are ambiguous:

• Minimum number of days users should be registered for to be eligible for mentorship
• Minimum number of edits users need to be eligible for mentorship

They are both defining the number of days of presence and the number of edits needed to become a mentor. They could be understood as conditions to get a mentor.

Proposition for the sentences:

• Minimum number of days a user must be registered to sign up as a mentor
• Minimum number of edits a user must have made to sign up as a mentor

Regarding edits, we should clearly tell if these edits are counted for all namespaces or only the main.