Translation of verifizieren

We would love to have you here as our guests! My niece Katja had also many diffculties with the new surroundings. She is really upset with this new change. How was your trip to Italy? I'll keep writing to you!
We have an option of uploading an excel file. However, we do give this option only to institutions and schools. The other ideas may be given in the future too. Thanks a lot for a great feedback!
I am glad for your help. I am sending you additional codes in the attachment. Please remove all codes that are without mistakes from the document and leave just the codes where you made changes.