Sad to say I tried but with the same invalid telephone number result . Is there a withdrawal restriction by country? How come some have already withdrawn their respective EONs ? I want to try it again or may be just wait for official exscudo announcement so that there is an explanation why some can't get the telephone numbers valid.
I think you're using the
https://test.exscudo.com/ instead of
https://slack.exscudo.com/ .
For me, I have receive the confirmation right away, I just tried it now.
Also, I have withdrawn my EON coins from my bounty portal to my android wallet, this is a good progress I guess.