Imgurai - AI Image Generator (SAAS)

This topic is a question about the product “Imgurai - AI Image Generator (SAAS)”
For people who use it, could you tell me if it is possible to change the character limit for the prompt? It comes configured with only 255 characters. I would like to increase or abolish this rule.
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Have you tried to contact the item author for the support and/or checked the item documentation?