That those options are inaccessible or unusable or greyed-out, suggests to me that the WiFi or wireless option on the printer, is missing, or not enabled, or if enabled it is now 'broken'.
In that case, the settings would indeed be grayed out, since the circuitry would not be there to be used, or would be disabled, or too 'broken' to be used.
Tell me more about specifics of this one printer - its history, what you have in mind for it as to how you want to use it, etc. - and I will advise you further.
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