GET URL formula

Hi Guys, how are you doing ?

I was wondering if I could count on you to help me with Get Url formula.

Firstly I used the formula suggested on this link https://help.appsheet.com/en/articles/2744751-email-attachment-file-archiving and It worked. Then for some reason the suggested formula stopped running.

Please find on this link a demo video to better show the problems I am facing https://drive.google.com/open?id=1KwL47Gwzsccp_kWd3c2jYPFaXiovnaHa&authuser=costa%40costaevalle.com&usp=drive_fs

On this video the formula was working https://drive.google.com/open?id=1L0kAiJv8ETAW5yKtkq9kCIGGnsd_iVV9&authuser=costa%40costaevalle.com&usp=drive_fs

Kind regards,