Hi AJ,
Thank you for reaching out and we hope you are in good health. We appreciate your interest in Samsung home appliances, specifically with Samsung - Bespoke 29 cu. ft. 4-Door Flex French Door Refrigerator with WiFi and Customizable panels - Custom Panel Ready.
Yes, you may use dry erase markers with the glass panels; however, it is not recommended as dry erase markers leave dirt, smudges even on white boards where they are intended.
I have shared a Samsung link below that can help you with cleaning your refrigerator.
https://www.samsung.com/us/support/answer/ANS00079481/
I have also shared the user manual link below. Please access the link and turn to page 14 for cleaning pre-cautions.
https://downloadcenter.samsung.com/content/UM/202205/20220525154141895/RF9000A_DA68-04023H-04_EN_MES_CFR.pdf
Please feel free to communicate with us through the channels below if you have additional questions.
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Your reference number:1144594359
Leo