I'm receiving error message "only one entry is allowed"

That error appears when the unique submission feature is enabled and the user tries to submit the form twice.

Please check this guide for more details: How-to-Set-Unique-Submissions-on-a-Form

If you want to disable the unique submission feature then please set it to "NO CHECK"

Thank you. I'll give it a shot and see if it works.
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That corrected our error! Thank you, thank you, thank you!
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