This morning I awoke to find that our company website was solid white with the message "ERROR ESTABLISHING A DATABASE CONNECTION" affixed to the upper left corner. Cursory Google search found numerous instances where this had been experienced, but in every thread I read through, these were new installs of WordPress or had an issue with a Mac, neither of which is the case here. We've not made any changes at all recently and there's no reason why our wp-config.php file would have been altered in any way.
I've looked at the file itself and nothing seems out of place. The password matches with our password and everything appears as would be expected. Reaction from 1&1 is best described as aloof yet casually motivated to explore it when the opportunity arises, but with no outward sense of urgency.
If there are threads that are open on this issue, the WordPress website's search function didn't seem to want to want to work, so my apologies if this is repetitive of existing/known issues. Any assistance or guidance/direction would be IMMENSELY APPRECIATED!