The simplest way would be to uninstall it through the softaculous app because probably something is wrong and than also delete all forum files you uploaded
softaculous - if you want to uninstall on the toolbar (up right) the box icon is located (the mouse over that icon will write “all installations”) click it…and thant find your phpbb and X (more options - remove files, DB, etc)
Basically, there are two ways to install popular software:
- Download the zip file from the official website, upload it and use the built-in installation wizard.
- Use Softaculous to install the software for you.
When using Softaculous, you should not use any other installation wizards or upload any files. When using Softaculous, Softaculous will do everything for you.
If you want to install the software manually but are having trouble accessing the installation wizard, we can help you figure that out. But to do so, we need a bit more information than "nothing happens" with a dummy URL. An actual URL, or more detailed description (or screenshot) of what you actually see would help a lot.