I've been in the pop jail for past 2-3 months. I've been approved for 3Amex's in past 6-7 months and been trying to get a 4th one...
I tried using different browsers, incognito mode but nothing worked so finally what worked was to use someone's referral link logged in via Miami IP address (VPN) as I live in the posh Sarasota
...voila the app went through...
However, It is still pending approval they asked for ID proof etc which I've supplied but they haven't approved, its usually instantaneous but been more than 48hrs in my case...YMMV...