In some rare occasions, related to server or connection issues the demo may fail to install or install partially. In that case trying to install again will not work as will result in multiple instances of menus or/and posts. The mainstream approach to resolving this issue is to perform a clean install of WordPress and proceed with theme installation again.
If you need to save time, you can simply reset the database. There are plenty of plugins available for this action; we have been using WordPress Database Reset as it is simple and efficient.
The advantages of resetting database are:
- You don’t need to install WordPress again.
- You can keep any plugin you have installed
- You can keep your user profile
Resetting database is not recommended when:
- You face serious issues on the installation and haven’t resolved
- You need to keep post and articles
- You need to remove a plugin (will not apply)
In any case, remember to maintain backups of your files and database as the may prove to be valuable in circumstances where critical data are entered by you or other users.