Hey there 
Thank you for taking the time to submit a bug report! Unfortunately, we can’t process your report as the format hasn’t been followed and some required information has been missed.
Are you unable to access the invite from your party menu or is there an error when trying to accept it once you see it in your menu or the chat? Please include these details in your next report.
If you are still experiencing this issue, please resubmit your bug report making sure to use the template, and provide all the requested information.
Stay safe and well