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If you're already a customer of ADvendio looking to activate Lightning Experience in your Salesforce Org see also 8.8 Activate Lightning for detailed information about steps you need to undertake and the most important difference compared to using ADvendio in Salesforce Classic.

Activate Connected Apps OAuth Usage

When using ADvendio in Lightning, every user need to activate OAuth for ADvendio connected App in order to use functions (listed below) which communicate with ADvendio Servers outside of Salesforce. 

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The process is fairly easy and done in two steps. Every user has to do this one and only has to repeat this if the administrator revokes access. 

Step 1

Try to use one of the listed functions above:

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Click on the link in the red bar: Authorize ADvendio.

Step 2

Click on the blue button "Allow". Then you can go back and click on the button again. This time the function should execute.

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