Hi Diana,
Hopefully you’ve been able to get back into the backend of your site by now. If not, here’s what you’ll need to do to make that happen. Use either a FTP program or the file browser in your web host’s control panel to go to the wp-content folder on your server. Look for the plugins folder there. Change the name of that folder to plugins1. That will manually deactivate all of your plugins.
After that, try logging back into the admin. If you can then do this. Create a new folder in your wp-content directory called plugins. Then move your plugins, one by one into the new plugins folder. Check the admin after each move. If it stops working when you move one, then the culprit has been found.
If you can’t log in after changing the plugins folder to plugins1, then open up the themes folder. Change the name of foxy to foxy1. That should manually deactivate the theme. Try logging in at that point.
If you get stuck, let me know.
Take care,
Bill