If you need an invitation letter to attend ICEUTE 2022, please, send and email to:
hector.quintian@udc.es
giving all the details related to your paper, and proof of payment: Id, title, authors, affiliation and also including the proper information about where to send it.
Also, please say if you need only a scanned versión of the letter or if you need the original letter send it to you via mail.