See, still learning after all these years. 🙂 I always mark 5 stars for communication. I buy, pay instantly, they mark it as sent within hours and it turns up in less than a week. Perfect as far as I'm concerned. :8}

It is actually the most recent of the ebay "innovations" to restrict the feedback that buyers can leave.  The greying out of the posting stars when Free Post is used was the first and as soon as we got used to that they added the Communication grey out.

As far as I am concerned it is not a success....I have several times been prevented from ticking the stars when I have definitely has communications with the seller.