Block as in trying to get the words out, but it's as if they won't form from your finger tips. For instance posting on a particular topic, you have the words and experience in the area, but when you go and try to respond or write something anew it's as if your mind goes blank metaphorically speaking. Like you just can't write. Sorry if my wording seems confusing I'm trying my best to explain.
But you are using words that only apply to you. yet you write "you" and "yours". It would be clearer if you wrote "I have a block!", and not that "you have a block". Yes, I know, the English language is very difficult.Most people in England would use the word "one". One cannot find the words; one may have a block.
It is, of course, different from writer's block that comes from either a contradiction in the premise (you have an idea for a character and an idea for a plot, but the character can't make the plot move unless they act out of character, or the plot has to change) causing this inner impasse or paralysis; and there's writer's block from lack of motivation and ennui or something.
But I had the kind of writer's block that you're describing. It turned out to be a symptom of depression.
Sometimes the ideas just don't connect to words anymore, or sometimes people just occasionally forget the word for a thing (and some unlucky people forget the words for every noun and verb in a sentence that they need to form in order to express a thing, but the concept is still alive in their minds of course.)
So...it happens. Sometimes, it's just meant to, like giving your mind a break and waiting for the clarity to come back. Maybe it's your sleep patterns, mineral or vitamin deficiency, or not enough fresh air and sunlight. If it gets to be a real problem, though, you might want to see someone about that.
On the whole, I think that if the message is understandable it is okay! The writing does not have to be grammatically correct, so long as it is able to be understood.English is very difficult because it is not a "pure" language.
I feel I would have to take time to meditate on what I wright or read an article that relates to it as I get idea's of what's on my heart to write. What's most important is I have to have an open spirit to let it's thought come to a picture as I write it that way it has its emotion and reflection of the topic I share.