Spock had to admit that he was impressed. Given the things he often heard said about humans - things that he'd always believed were true in general with his mother simply being an exception - he hadn't expected Nyota to figure out how to turn the device on before he'd figured it out. That wasn't to say he thought humans were stupid. They weren't. They were a very intelligent race in general. However their emotions, according to Vulcan belief at least, limited them in a great many ways. He had just naturally assumed that this strange, overwhelming situation would be one of them.
Clearly, however, he'd been mistaken.
Following her example, he turned on his own device and frowned softly at the message when he, too, came across it. "Perhaps the devices are malfunctioning," he suggested instantly, grasping at the first logical explanation he could think of to explain why he would be able to see something that said, quite clearly, it was limited to Starfleet personnel only. "After all," he went on to add, looking back to the girl standing in front of him, "There are no Vulcans in Starfleet."
So yes. Clearly, that was the answer. The devices were malfunctioning. Or, quite possibly, the filter had been set incorrectly by the woman who had posted the note. That was also feasible, although he made no move to suggest it out loud. He figured the less theories they had to deal with at once, the better.
Still... it didn't hurt to explore all angles. That would be the logical thing to do.
Once more looking to Nyota, Spock suggested almost hesitantly, his uncertainty at this latest bit of confusion evident, "Perhaps one of us should reply while the other looks for any other pertinent information which may be available?"