Axis Atlas - Direct or TravelEdge

Hello Dimers,

I have an upcoming trip from Delhi to Amsterdam in November.
I've recently got my Axis Atlas and I was planning to use the same for Flight Booking.

I noticed that Finnair is a good option. Now, I see three options:

Option 1: Book Directly via Finnair.com. I'm assuming I have to bear additional forex fee for the booking because Finnair would be using an INTL payment gateway. Question: Will I get 5X here?

Option 2: Use TravelEdge. Now, I see a difference of around 5K INR here w.r.t Option 1. I don't see a reason for the inflation.

Option 3: Use OTAs. I see they are cheaper than Option 2 but I won't get the 5X there. Will this option still make sense?

I also heard that Atlas had some issues while using TravelEdge and not everyone got 5X. Is this issue resolved?

Happy to hear thoughts from the community.