That's funny, because that's what I asked myself 5 years ago or so. In principle you can click on the merit tab and even try to merit yourself, the only thing I preferred to ask at the time rather than merit myself because it could have been seen badly by the community even if it was an experiment.
Yes, that is what happens. You can follow all the steps but if at the end you try to send the merit you get the error message. I hope this solves the OP's doubt.
@OP it is an obvious question that you yourself can answer. You just need to look at your post and see if the option to merit yourself is allowed. You already have merit and you could have try it yourself if meriting oneself is possible Honestly, sometimes we need to work on our exploration than just posting question that can be answered by ourselves.
Yes, that is what happens. You can follow all the steps but if at the end you try to send the merit you get the error message. I hope this solves the OP's doubt.