What has Mr. Wilson already tried? He followed the advice in the manual and searched the website

Câu hỏi :

Question 88 - 92 refer to following paragraph:
Passage 1:
E-Klavier Digital Piano – User’s Manual
Thank you for purchasing an E-Klavier Digital Piano by SoundDesign! Please carefully read the user’s manual prior to operating your digital piano. Not only will it enhance your experience, it will also extend the life of your machine. Your E-Klavier Digital Piano is manufactured to the most exacting specifications using the best materials available. By following the instructions contained in this manual, it will provide you with a lifetime enjoyment. In addition to this manual, there is more information on the SoundDesign website.

Important Warning
The surface of your new E-Klavier Digital Piano by SoundDesign is coated with our patented high-gloss enamel to mimic the finish of the highest-quality grand pianos. It is susceptible to scratching. Should it require cleaning, you should wipe it with a lightly-dampened cloth. Under no circumstances should you use detergents or abrasives to clean any part of the surface, as scratching or discoloration may result. Should you have any problems with your digital piano that are not covered by the material in this manual, first check the FAQ and troubleshooting sections of our website at www.sounddesign.com. If you still cannot find a solution to your problem, call our service representatives at the number on the back cover of the manual, or e- mail them at service@sounddesign.com.
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Passage 2:
To: service@sounddesign.com
From: r.wilson@fossex.com
To whom it may concern:
I recently purchased a T-201 E-Klavier, and have been very satisfied. It has so many useful functions! If anything, it has too many. (It took me a whole afternoon to figure out how to use it properly; but, then again, I’m not exactly skilled with electronic
gadgets). It really lives up to the promises in your literature. The sound is excellent. My son-in-law, who is a concert pianist, was impressed, so that says a lot.
Anyway, the main reason I’m writing is that my little granddaughter spilled her grape juice all over the top of the keyboard. I mopped most of it up at the time, but some got under the lid and now it’s a sticky mess in there. I tried using a damp cloth as the user manual recommends, but it’s just not coming off. I looked through all of the material on the website, too, but I think this problem is rather unique. I’m worried about ruining the finish, so I’m asking if there are any soaps or detergents that I could safely use.
Thanks a lot,
Randy Wilson
88. What has Mr. Wilson already tried?