Fyers InstaOptions NOT showing Final Margin Benefit

2 Issues -

1. Fyers InstaOptions is NOT showing Final Margin Required after Margin Benefit (compare it with Fyers Basket Order for same strikes - BULL PUT SPREAD)

2. Fyers Margin required is 29K whereas Zerodha Margin required is 23K for the same legs. Why there is so much difference (more than 20 %) ?

Fyers InstaOptions - Margin Required : 96K

Fyers Basket Order - Margin Required 29K

Zerodha / Sensibull - Margin Required 23K