These are short question-and-answer pages for one problem at a time: a payment that is late, a client who keeps adding work, an email address that stopped working after setup. Each starts with the short answer, then walks through what to check in order.

Where the author has run into the problem himself, the page says so and describes what happened. Where it is general guidance, it is labelled as such. Tool comparisons live in the other categories; these pages are for the moment something has already gone wrong.

How we write them: every page gives the answer first, shows the steps in a diagram, and links to the longer guide if you want to compare tools afterwards.