This may be the dullest question, but I have tried a dozen times to register at https://recyt.fecyt.es/index.php/EPI/user/register
and each time there is a problem with invalid ORCiD number. So I have tried copy-paste as plain text, copy-paste special, to write it directly, changed web-browser and so on…
Can please somebody help me with this issue?
Thanks in advance