Sad face on the led matrix

hi guys, i have a problem with my arduino. It is my first time so be patient. I have an arduino uno r4 wifi. I connected it to my pc and i have downloaded everything. Then I've tried ''create'' the sonic synth (it is one tutorial among the 7 of the plug and make it kit), i verified and compiled the code but my matrix started to show the symbol of wifi and then a sad face. Obviously the sonic synt doesn't work but I don't know what I have to do to solve it. Can you help me? Thanks.

Welcome to the forum.

Please post the code using code tags.

sorry what do you mean?

Copy the sketch you are using for your project, then click the CODE/ button at the top of the reply. Copy your code where it says "type or paste code here"

Here is a link to more detailed instructions.

ok thank you, but now the problem is that my device is offline so the modulinos cannot comunicate with the board

Perhaps someone more familiar with the make-it kit than me would better to answer this.

Hopefully, you will get an answer soon.

I am sorry that I could not be of more help.

Thank you

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