Hi ​@Clint M 

It's possible that your permission level for the document has been set to "can comment" instead of "can edit" or "can edit and share" by a teammate.

Besides, if the document is stored in a team folder where you don't have full access rights, you'll need a team member with "edit and share" permissions to adjust your access level.

Hope this helps - Happy to help further!!
Thank you very much and have a great one!
Warm regards

Thank you for your response, ​@Humas1985. The owner has shared the document to me with Edit And Share access. Yet, still can’t edit. 

​@Humas1985 , Do I need a trial or active license to edit the shared document?

Hi ​@Clint M 

To edit a shared document in Lucidchart, you'll need an active account. A free account without a paid license will also work, as long as the document owner has granted you edit permissions

Regards

​@Humas1985 , my account is on a free license but has granted with the edit permission, yet still can’t edit. 

​@Clint M  - Thanks for confirming, this situation seems weird, someone from Lucid team may be reaching to check on this user specific issue.

Regards

Hi ​@Clint M, thank you for posting your question in the Lucid Community! Thank you ​@Humas1985 for your help here!

​@Clint M Since we’ll need to take a look at the document you mention and the other accounts you mention, and since this deals with personal account information, I am directing this to a private support ticket to get you taken care of. The team works through tickets in the order they are received, and you can expect a quick response to your email associated with your Lucid account.