Urgent help needed

I installed SSL after my site was already built using auction theme.. it messed everything up, i was trying to get the padlock to show on site but it didnt so i scanned with whynopadlock.com and it showed 6 errors that were images and plugins.. i disabled all plugins on site then re enabled them and the errors just came right back.. didnt fix anything but it did create a new issue.. now when i go to login to my admin dashboard i login using “admin” and click dashboard, it just takes me back to the login screen.. i dont ever see the dash.