From my knowledge, LinkedIn has indeed recently upgraded their API from version 1 to version 2. This change may have caused integration issues for some third-party software, including the one you mentioned. I would recommend checking with the developer of the software to see if they have plans to upgrade their integration to the new API version.
Also, it is important to note that according to LinkedIn's terms of service, scraping email addresses from LinkedIn (https://www.globaldatabase.com/boost-your-sales-engagement-with-chrome-linkedin-extension-1) is not allowed. Therefore, any software that claims to provide such functionality is likely in violation of LinkedIn's terms of service and may be subject to penalties.
From my knowledge, LinkedIn has indeed recently upgraded their API from version 1 to version 2. This change may have caused integration issues for some third-party software, including the one you mentioned. I would recommend checking with the developer of the software to see if they have plans to upgrade their integration to the new API version.
Also, it is important to note that according to LinkedIn's terms of service, scraping email addresses from LinkedIn (https://www.globaldatabase.com/boost-your-sales-engagement-with-chrome-linkedin-extension-1) is not allowed. Therefore, any software that claims to provide such functionality is likely in violation of LinkedIn's terms of service and may be subject to penalties.