Dear Ms Stoffel,
I figured that your problem is a web browser issue and not directly related to REDCap, i.e., see this stackoverflow thread:
https://stackoverflow.com/questions/68617268/redcap-is-there-a-way-to-remove-the-suggestions-box-when-entering-into-a-text-f
Fore more information on how to clear your browser cache (depending on which browser you use), please consult this help page:
https://support.iclasspro.com/hc/en-us/articles/218569268-How-Do-I-Disable-or-Clear-AutoFill-AutoComplete-Information
Let me know if that fixed your problem.
Best wishes,
C.