Hey @Jacky,
Adding Events Calendar Pro will not necessarily erase customizations to your Community Events plugin, but this all depends on how you have implemented the customizations specifically.
We cannot help with customizations, and so the management of that custom code is a responsibility you’ll have to shoulder and figure out, but installing Events Calendar Pro alone should not break or delete customizations.
Next, you ask, “Also can you set pictures for a community event view?” This is unfortunately not included out-of-the-box, so to make some sort of photo view you would have to custom-code it or hire someone to build out that customization for you.
Sorry to disappoint!
George