Is that any better ?
Sorry for the late reply Brydo had my fibromyalgia flair up this morning.
Ok I can read it better now. So I think what would be suitable for what you want is an Led panel driver. This will give you the voltage out you require as stated on the plug 31V DC.
I have found this at a good price https://www.amazon.co.uk/LEDLUX-30V-42V-Constant-Current-60X60cm/dp/B08DYB95GR/ref=asc_df_B08DYB95GR?tag=bingshoppinga-21&linkCode=df0&hvadid=80401889848623&hvnetw=o&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=&hvtargid=pla-4584001428411331&psc=1
Have you access to Amazon ?