Hello @Davide Calde ,
Thank you for posting here.
To better understanding your question, please confirm the following information:
1.What is VoIP application?
2.Have you installed the lower version of this VoIP application?
3.Or maybe you have installed the lower version of this VoIP application 5.7.3, then you update from 5.7.3 to 5.7.5, then to 5.7.7, now to 5.7.14?
If you can find VoIP application support engineer to see if the registration information of the old version about this VoIP application is still there (such as in somewhere of registry) after the version update.
Best Regards,
Daisy Zhou