Delay Repay Not Working

I've been trying to submit a refund form (Here: https://www.southwesternrailway.com/contact-and-help/refunds-and-compensation) for an 1hr 30 min delay last Saturday.

I didn't know whether I was eligible or not, until the conductor mentioned on the loud speaker that refunds could be claimed online for the delay.

But the online form doesn't seem to be working. I fill in all the relevant fields and when clicking submit nothing happens.

Has anyone had this same issue? It's been like this since Sunday.