Hi,
MLInvoice 2.3.1 has been released. This version contains only bug fixes including a major one: invoice repeat interval was not saved correctly. See the change log at https://labs.fi/mlinvoice_features.eng.php#changelog for more information on the changes.
The new version can be downloaded from https://labs.fi/files/mlinvoice-2.3.1.zip.
BR,
Ere