There may be problems with using a Gmail email address, depending on the phone platform. The email may not be received when send to a gmail address.
Please use another email address, eg Hotmail, outlook
Also the Gmail Email app may have problems, even if it is used for a non-gmail eemail address, eg if you use it to download hotmail email addresses, It seems to truncate the .jrlccip file attachment so that it is only a few bytes. The jrlccip file should be several kilobytes in size. If it is less than 100 bytes that there is an error and will not work
Another way to get the jrlccip file into your android phone is to download the attachment in your email on your computer, then extract the attachment. Check that iti is several kilobytes size, then transfer the file into the downloads folder of your phone using a USB cable