@Thedurancode What is the exact error? Do you have a screenshot ?
Also, as @JLX89 said, there are two WordPress packages:
Managed - https://www.cloudron.io/store/org.wordpress.cloudronapp.html
Developer - https://www.cloudron.io/store/org.wordpress.unmanaged.cloudronapp.html
If you want to use a lot of plugins/customization, use the Developer edition. This gives you a lot more control of your installation.