Hi MTimetraveler, have you tried restarting your device? What is the current software build of your device?
Try removing your google acct from the device and then logging in again. If this doesn't help you're likely looking at a factory reset.
Alright did a little digging around about your error RCP:S-7:AEC-7, it's a playstore error or account error but not necessarily something wrong with your phone <it most like is your google account registered to that device but it's possible it's an issue on googles side>.
When you did your factory reset did you make absolutely sure to follow the directions for a fresh login of your google account?
Sometimes a first-run factory reset DOES NOT correct the issue but a SECOND factory reset will <no idea why that is>.
Here's a link to googles website with steps to take about that specific issue.
Apparently an aec-1 and aec-0 is not the specific error code but rather the rcp:s-7 part of the string, hope this helps a little.