I was told to check out the documentation which did not answer my question I originally asked.
If I wanted to change the css tags and div references could I? or will I encounter problems with your software?
As it has been already answered, if you copy wpForo template files to /wpforo/ folder in your active theme, then you'll not have any problem.
You can insert custom css code in wpForo > Settings > Colors & Styles admin page
I meant the tags that are already in the plugin like #wpforo. I want to change those. Can they be changed if I changed those and the div references?
It seems you've not read the template customization topic. It says that you can copy wpForo template files to your current active theme's /wpforo/ folder and change any div you want. The #wpforo tag is located in the index.php file of the template file, so just do that and change whatever you want: https://wpforo.com/docs/wpforo-v2/forum-themes/theme-customization/
@robert Alright I will try it and see what happens.
I thank you for helping me and not ignoring my response.
I have another question about the documentation using custom templates.
Is there any chance of changing this: wp-content/themes/yourtheme/wpforo/layouts/1/topics.php
to something like this: wp-content/themes/yourtheme/boards/layouts/1/topics.php
Without encountering any problems?
It's not possible. All boards use the same template files of the 2022 theme. If you customize any template file, it affects all boards. There is no way to do a board specific template customization.