If the org is installed with older version of BluSynergy package and these steps will guide you on upgrading the package to the latest version.
1. Upgrade Package:
BluSynergy Salesforce Connector Version 2.27
After login your Salseforce org, add above mentioned URL right next to force.com on your home page URL to install the package.
/packaging/installPackage.apexp?p0=04t4W000002YxwQ
If your URL is https://yourDomain.lightning.force.com/lightning/page/home, use below URL to install package
https://yourDomain.lightning.force.com/packaging/installPackage.apexp?p0=04t4W000002YxwQ
Contact BluSynergy support to get the password to install the package.
Fig 1: Upgrade page.
fig 1a: Upgrade in progress.
fig 1b: upgrade Confirmation.
App upgradation may take a few minutes. Go to Setup -> Search for Installed Package and Refresh "Installed Packages" screen after sometime to check upgraded package version.