Hey Lucid Users -- when it comes to Custom Fonts there are a few specific things worth noting: 

•  You can import TTC TTF or OTF files as custom fonts and any other font file type will not be supported.



• If you have uploaded a custom font into a document it should work for anyone who you share the document with. However if someone makes a copy or another version of the document and do not also have the custom font uploaded into their account the text will no longer appear correctly. This also applies to versions of the document that have been made into templates. 



• Please try the steps again in a Google Chrome Incognito browsing session. This often improves performance by clearing your cache and cookies and disabling your extensions. 

If the issue persists please give us a heads up with the following information:

• A screenshot of the issue.



• The font file you are attempting to upload.



• A screenshot of the associated Javascript Console output after reproducing the issue. You can open your Javascript Console by pressing Ctrl+Shift+J (if your computer is a Windows/Linux) OR Cmd+Opt+J (if your computer is a Mac).