Issue
None of your tokens are rendering inside of your .ics Calendar File token and instead are showing as the {{lead._____}} form.
Solution
This is caused when a single token has an undefined value, such as a 'My Token' which doesn't exist in your Program.
Send yourself a version of the Calendar file and look for a blank space where a token should be- This will be the token causing the others to not work.
Make sure to define a value for this token and then your Calendar File will render without issue.
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