What if you don't want to use your own YouTube API Key?

You can use the block's own default one by leaving the field blank. This is not without its limitations though . As due to the addons popularity it tends to exceed its quota of views really quickly. If you put your playlist in without an api key

You really should use your own if at all possible as you will have control of it. If everyone uses the default YouTube key on the block and it exceeds YouTubes daily limit it will max out and the plugin will not display any videos until the api quota is reset the next day. Note** this is how YouTube works quotas are set and reset daily by them.

If you are not confident in setting your own api up I can do this for you under the paid support plan.