Hello, Welcome to the Forums.
I’d try appealing the decision. (There is a text box where you can explain that you are unable to take action on their feedback)
My theory is that if you have text strings in billboards (or in Verse) that’s all collected and presented to the island moderator in a big list as “project_string_xx” , I’d hope that the island moderator would at least be able to provide you with the contents of those strings.
Another option is to post all of the text in your project here, and we can speculate as to things that might not be passing moderation. - since you’re submitting an updated version, any text that you changed recently would be top of the list for consideration.