Hello There,
To change the limit you will need to make changes in the schema of the theme. As it might be input box which you will need to change it to the text-area.
As the Booster is the paid theme so I don't have any idea about it's schema but if you can share your store access then I can assist you in achieving it.
Want to modify or develop new app, Hire us.
If helpful then please Like and Accept Solution .
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