Wrrldgrrl

I know everyone raves about World Nomads travel insurance, but I cannot get their website to accept a payment. I've tried different browsers, devices, credit cards and incognito mode, not to mention different days, weeks and months. They don't take payments over the phone and very politely basically suggested I keep trying.
So, anyone have a company they recommend? I saw "Safe something" mentioned in some blogs but I forget which ones...
TIA