Its pretty ridiculous if they had the issue previously.
that screenshot proves nothing. Option requests are sent prior to the actual request and is not executing anything. Their service is down and that 503 error would appear no matter what you send.
This is just a hoax, thereās no bug here in the logsā¦ in fact it shows how well RHās infrastructure is setup, with CORS check enabled.
https://techcrunch.com/2020/03/03/robinhood-outage-cause/
The official reason is that they couldnāt handle the load.