Please try this. It should fix the problem. If not, just reply to me for further troubleshooting.
1. Launch the Mahjong game and select More option.
2. Choose Appearance and click on Tiles.
3. Select the Tiles that doesn't display the numbers from the list and click on Close.
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What do you see on the appearance window?
I'm not sure which version of Mahjong you are running, so the easiest way for me to fix this would be to connect to your tablet running Windows, and fix it for you. If you'd like to do this and get it fixed, all you need to do is accept the offer for remote service.
OK. I am available now and for the next few hours.
It appears there was a payment failure on the remote service, so as soon as that is cleared up, I will send instructions for remote connection. Thank You.