If you're seeing an error message stating "We can't load this add-in because we couldn't connect to the catalog," "502 Bad Gateway," or something similar when trying to use the PERRLA for Word add-in, this indicates an issue with Microsoft Word. You can try to add another Word add-in, such as ScriptLab, to confirm that Word is having trouble with all add-ins.
Unfortunately, since this indicates a problem with Microsoft Word itself, this is outside of what we're able to fix on our end. You would need to contact Microsoft support and let them know that you're getting this error when you try to use any add-ins in Word.
If you have any questions about using PERRLA Online or our Google Chrome extension to work around this issue, you can reach out to us at support@perrla.com.