should I worry about this? I kind of regularly login myself to "https://royals.ms/" and regularly click "Vote for NX" just for checking how much 'wait minutes' I got left. sometimes smartphone, sometimes desktop computer. (no abusing. only with the same one ID) . and I never used any kind of "robot" program.
Nothing to worry, it's just to prevent people botting, it something falsely detects you and this message will pop-up, it doesn't actually have any consequences