connectAuPair doesn't offer any free basic memberships.
Because a basic membership - like other matching sites offer it - is actually pretty useless and only leads to a lot of non-active members.
(With a basic membership for free one can normally only search and quite often also get in contact via standardized messages, but it’s not possible to write or answer „real“ messages. And as quite often it’s not even indicated who’s a basic member and who’s “premium” member, the other doesn’t know why (s)he doesn’t get an answer….)
Apart from statistics, which show impressive numbers of members, no one profits from this kind of membership – it only leads to frustration if you don’t get an answer and don’t know why.