Expected primary expression

[b707]

@tom_tuffin

I have spent literally tens of hours trying to figure out the message expected primary expression before '.' token. Many answers are given, but they all seem simply to correct the code for the client without telling why there is an expected primary expression

To figure it out you need an understanding of C++ language.

"Expected primary expression" is not the only error in your code. Honesty speaking, this sketch has a lot of errors and typos, so, I think , the preferable way for you is just to copy the syntax from the library examples.