Why are the buttons typing the wrong characters or input?

I have had my Dymo LabelManager 160 for a while. Lately, it has been glitching in which pressing a certain key produces the wrong function. When I press the L key, it activated the rotate function. Also, the punctuation key displays the number 9. Pressing the delete key activated the underline key. Pressing the O key printed the label!

I even tried a factory reset by removing the batteries and pressing and holding the power button for 10 seconds. Then, I reinserted the batteries and pressed power + 9 + backspace. Still did not fix the issue.

I would greatly appreciate any help. Thank you for your help!