We have released version 2.0.7, of A2Billing which is a minor upgrade and fixes a few bugs reported to us by the community.
See https://github.com/Star2Billing/a2billing/commits/master for full details of the changes and to follow future development.
We advise that everyone should upgrade to this latest version, and would recommend in the strongest possible terms that anyone still running A2Billing 1.9.5 or earlier should definitely plan to upgrade as a matter of urgency. The Star2Billing team can offer help and support to upgrade, or follow our upgrading guide.
We have also built a number of add-ons to extend the functionality of A2Billing, see Add-ons for more details.
The Star2Billing Team