One of the more difficult issues many PDF to Excel converters face is the ability to convert into Arabic.
First of all, it's important to understand that not all Arabic documents will successfully convert, as scan quality and text embedding are still a major factor in the OCR's ability to recognize the characters. We are, however, continuously working to improve recognition and accuracy.
Another problem is when you have a document containing more than one language. Choosing the Arabic language will help recognize the characters in that language, but can affect the characters in another language, as it tries to recognize all the characters as Arabic.
When you open your document, go to Options > OCR.
You will need to have the advanced OCR activated (only available in the Enterprise plan).
Select the Arabic language from the OCR Language dropdown. If it isn't listed, use the "Add Languages" button to install it.