Youtube Copyright claim on visual element


Is it normal to have copyright claim on youtube for “visual” because using a video template even with licence ?
We had to dispute and copy the licence to Youtube then wait, and it could takes 3O days for Youtube to make a decision. And we could get a strike if the author is unfair.
So finally our client tell us to delete the video from his channel to avoid any further strike.

Its really a non sense to paid a platform like Envato to have this kind of issue because we are using Envato to avoid these cases. To paid for content with the right to use is the purpose.

Any explanation or process to avoid this? Because it’s a waste of time if we have to dispute and contact author for all content we create or upload.