Incorrect Swedish terminology when validating electronic signatures in Adobe Acrobat Reader?

Hello,

We would like to ask a question regarding the wording currently used in the Swedish version of Adobe Acrobat Reader when validating electronic signatures in PDF documents.

We have noticed that, in some situations where Adobe Reader cannot establish trust in the certificate chain, the signature is presented as "Felaktig" (Faulty/Incorrect). We seem to recall that similar situations were previously presented as "Okänd" (Unknown).

Could you please clarify whether this change was intentional?

Our concern is that the word "Felaktig" may be interpreted by users as meaning that the electronic signature itself is invalid, corrupted, or otherwise defective. However, in the cases we have observed, the underlying issue appears to be that Adobe Reader is unable to verify the trust chain because the issuing certificate is unknown or unavailable.

We are therefore wondering whether "Felaktig" is really the intended translation for this validation status, or whether a term such as "Okänd", "Kunde inte verifieras", or similar wording might better reflect the actual situation.

This distinction is particularly important for electronic signatures used within the European Union under the eIDAS Regulation. An Advanced Electronic Signature may still be legally valid even when Adobe Reader is unable to establish trust in the certificate chain. Users can easily interpret the current wording as meaning that the signature itself is not valid.

We would appreciate any clarification regarding the reasoning behind the current terminology and whether this localization has recently been reviewed or changed.