Flight to Japan cancelled, no refund yet. rebook now or risk price increases?

Hello everyone,

Before the conflicts began, I booked a flight through Booking from Frankfurt to Tokyo with Emirates.
My partner and I are planning to spend two weeks in Japan, and I’d like to propose to her there.

The problem is that our flight, which included a layover in Dubai, was cancelled by the airline a little over a week and a half ago. They haven’t been able to offer me an alternative flight.

I’m still waiting for a refund for that first flight, which is taking a long time, and Booking’s customer service is terrible. They speak neither French nor English, and most of the time it feels like you’re talking to a glitchy AI.

I’m hesitant to book new tickets before receiving the refund for the first ones. On one hand, I don’t really want to spend another €2,000+, but on the other hand, I’m worried that prices will keep rising as our travel date approaches (we’re planning to leave around the week of May 11).