missed deferral opportunity

[Pixie]

Hello.  An employee turned in her paperwork and payroll missed setting her up.  We are fixing with the 50% amount of missed deferral plus income.  My question is does the plan safe harbor match apply?

[WCC]

If the error had not occurred, would she have received match? If so, then she should receive 100% of the match that she would have received had the error not occurred. (Rev Proc 2021-30 Appendix A Section .05)