Tried to join the MeWe group via the link that Lars Fosdal has posted, but that doesn't work (for me) on mobile from...

Tried to join the MeWe group via the link that Lars Fosdal has posted, but that doesn't work (for me) on mobile from G+. Tried to join the MeWe group by searching the group in the MeWe app, which keeps telling me that I can't join this group.
Sort of stuck ...
Can't comment on the original post because comments are disabled