Yes, I know this will seem a simplistic post that some may rail at, but all troubleshooting is process of elimination.
In general.... If something has been working fine and now suddenly it doesn't, you have to ask yourself "what has changed?" Did you install some new app on your phone that may be conflicting? Have you modified your wireless router settings? Have you updated the OS or "changed a setting or two while tweaking this or that"? Try narrow it down to the cause and address it. Sometimes a simple reboot (of router and/or phone) _does_ flush out caches and "fixes" issues.
"Disabled" status on a network connection/profile typically means something is blocking (for lack of a better word) the connection. Parts of the connection info being passed are okay, but not all.
I've often seen that simply changing the encryption method for your network via the router's admin panel (from AES to TPIK or vice versa, or setting to "auto") will address issues. If your router is set to filter on MAC addresses, make sure your phone's address is in the list.
Often people will swear up, down and sideways, 'til they are blue in the face, that they typed their wi-fi network's password correctly when setting up the network on their phone, but when they use the "show password" option they will see a character or two typed wrong. :-[
