For anyone with the account server not working error,
1- Open SQL management studio
2- Right-click DESKTOP-XXXXXXX\PKO25 and click properties
3- Go to security and check the box that says "SQL server and windows authentication mode" and click OK
4- Go to Security --> Logins --> right-click sa
5- Go to general and set password as Y87dc#$98 and uncheck user must change password and uncheck enforce policy then go to status and check the box that says enabled under login and then click OK
6- Right click DESKTOP-XXXXXXX\PKO25 and click disconnect
7- Go to services.msc and restart your SQL Server (PKO25) service
7- Now login again using sa as username and Y87dc#$98 as password
8- Your account server should now launch
Note: the only thing you have to do in the server files is copying and pasting DESKTOP-XXXXXXX\PKO25 from your management studio and replacing the old one.