I need excel macro which replaces some characters in workbook with addresses

Description of support work: Hi, I download orders info from shopify in excel. There are addresses with specific letters in French or polish or other languages. Like "ü" which needs to be replaced by simple "u" without dots. I can replace them using "replace" feature in excel but when I create macro, "ü" appears as "?" or other character in developer. So, I need macro which looks at another excel file where I can add more characters in future and it should replace these characters in original file. tandard language for non-unicode programs is English (united states) Extra notes: