It seems to be ok. Just have two remaining problems:
I bought a peppol_500 but the peppol but on /settings/e_invoice > Peppol Preference, I see a credit : 0. I don’t see how to link the recent buy with my invoice ninja instance.
I can select “send invoices”, but when I select “receive invoice”, the user interface don’t show anything, but the network inspector reveals this error {"source":"acts_as_receiver","details":"cannot be changed to true, because some of the participant identifiers are already active on an exchange network"}