Thanks, Michael!

I did some very quick research and found some more places that seem to be legit after some quick background checks here are the sites that passed through some quick background checks of being legit and also seem like a good fit to expand your digital store for your art and skills:

Fine Art America: https://fineartamerica.com/sell-art-online

Upwork: You can sell art and your skills here: https://www.upwork.com/cat/design-creative

Fivver another place where you can sell your skills and art: https://www.fiverr.com/start_selling?source=top_nav

Singulart: https://www.singulart.com/en/application (pretty upscale art-selling site it seems)

Saatchiart: https://www.saatchiart.com/whysell

(seems like a great place to sell your art Michael seems like the art being sold here look similar to your art style)

TurningArt: https://www.turningart.com/artists

(Another one that has similar art style as your paintings being sold in the site)

Last but not least: Artsy: https://www.artsy.net/sell

(Another promising looking website for your online business.)

I am sorry I can't be more useful and helpful then this. I really hope the best for you and your wife.