That’s interesting - the TL-A1 is a TopWisdom driver. That’s a different controller than I expected on the Reno. Their USB driver is here: http://m.topwisdom.com.cn/Download/down/id/ZW46MzI%3D.html
Give that a try. Though I think the drivers in LightBurn cover this already. I’m asking for more info internally, as I don’t have any TopWisdom controllers on hand personally
UPDATE: Yes, confirmed that the TL-A1 needs this driver, and to install either the stock software or (unconfirmed) the USB driver above to make it talk to LightBurn.
There’s been some discussion about this specific controller in-depth on the forum here, and more can be found with the search icon in the top right of the forum: Monport Reno Pro (TopWisdom TL-A1) sucks with Lightburn - #5 by LightBurn