Additional contents and resources are automatically loaded in Explaindio 4 from the API.
When you purchase additional resources i.e. Explaindio 4 Template Club, Explaindio 4 PRO Creator Pack etc, those additional contents would be automatically loaded into your Explaindio 4 Software from the API. Please make sure you've validated your Explaindio 4 Software with your Sign-up Email ID.
In case you missed the validation prompt during the activation process, you can always go to Settings and update your Email and Password.
For Transitions, click on the ADD Animation/ Slide and Select the Scene Pack you want to use for Transitions. Transition Scene Packs would usually have the word "frames" at the end of the Scene Packs names. For Example: LightEffect3-34frames is a Transition Scene Pack.
For 3D Intros, Outros and Deluxe Sting Animations, Click on the Add 3D Object then Add From Cloud.
Look for the 3D Image Templates. You will find the additional template sets.