My small private host suddenly decided he didn't want to host for anyone anymore and sent me a zip file of my forum. I found new hosting and had the forum migrated over, but I'm getting errors when I try to login and the hosting service won't help me with these sorts of problems. I have attached a screenshot of what the errors look like. I have no idea how to fix this since I am not an IT person and am hoping someone can help me figure this out because I have no idea what these errors all mean.
Welcome to phpBB. Unfortunately, support for 3.0 ended several years ago. The current version of phpBB is 3.2.3. You can follow the steps below to upgrade to 3.2.3.
Your server must be running at least PHP 5.4.7 or higher.
phpBB 3.2 is not compatible with 3.0 and most of the previous files will need to be removed prior to upgrading.
Styles and MODs from 3.0 cannot be installed on phpBB 3.2. To upgrade, perform the following steps:
Make a back-up of the original files and database
Deactivate all styles except for prosilver
Remove all MOD-related changes from the database. The Support Toolkit's Database Cleaner can be used for this.
Ensure that the activated spambot countermeasure is one of the standard phpBB plugins (Simple image, GD image, GD 3D image, Q&A, reCaptacha).
Set British English as the only language pack and delete all other language pack directories from your server
Delete all of your phpBB 3.0.x files EXCEPT for the following:
The config.php file
The /images/ directory
The /files/ directory
The /store/ directory
Upload the contents of the phpBB3 directory from the uncompressed 3.2.x Full Package (EXCEPT for config.php) into your forum's directory (Note: you don't want to overwrite your original config.php file)
Browse to www.example.com/install/
Click the Update tab
Click the Update button
Select "Update database only" and click Submit
Wait for the progress bar to reach 100% and for a message indicating that the update has completed