Hi,
To use code tags just paste the code, select it and press the “</>” button at the toolbar 
Currently there is an issue with the esp8266 thinger library 2.17.0, check this post: Arduino Library 2.17.0
What I would do is to downgrade to version 2.16 meanwhile they patch and release the library, this will be soon as there is a patched version already, or get the file from the github as is published in that post, I’ve tested that version and it works without issues.
Hope this helps.