RESOLUTION_NOT_ALLOWED on /template/{template

I'm trying to generate a video from a template, but I always get the following error when checking the video status:

"error": {
      "code": "RESOLUTION_NOT_ALLOWED",
      "detail": "Please subscribe to higher plan to generate higher resolution videos",
      "message": "Please subscribe to higher plan to generate higher resolution videos"
  },

On the generate, I've tried using default dimensions, or passing other dimensions (e.g. "dimension": {"width": 640, "height": 480},) without any success.

According to the documentation, the limit on the account should be 1080p. Are there other limits applied when it comes to templates?

Any help would be appreciated.

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RESOLUTION_NOT_ALLOWED on /template/{template_id}/generate