Yesterday I was trying to book a hotel (the W in Suzhou) and the Marriott website was very slow. Somehow, it issues two reservations; one is the one which I intended (and to which I applied a SNA) and the other which I do not need. However, I cannot access the "unwanted" reservation from the app nor from the website. In fact, I cannot log into the website at all (not even from private browsing), while I can log into the app but cannot open the reservation.
On the website I get: Our apologies – sign-in is temporarily not available. We’re working to resolve this. Please try again later.
On the app I get: The service is temporarily unavailable, please try again later.

I tried to email the hotel but they did not answer. The reservation is for Friday (it's a flexible rate, can be cancelled for free until Thursday). Any idea on what I could try?

Thanks!