MIcrobiomeAnalyst error in parsing data as numerical- possible reason: comma as decimal separator

I keep getting the following error when trying to upload my txt files through the marker data profiling tool. I have checked all my files and they conform with the recommended instructions on data formats. Does anybody know what to do?

Error!

Possible causes of error (last one being the most relevant):

Errors in parsing your data as numerical - possible reason: comma as decimal separator?