Get in touch
One person reads these. A reply usually takes a working day or two, and every message gets one.
Message sent
Thanks, it arrived. One person reads these, so a reply usually takes a working day or two. If it does not appear, check the spam folder before assuming it was ignored.
What else reaches us
If you have an account, the support screen inside the app keeps a thread rather than a one way message, which is better for anything that takes more than one exchange. It works signed out too.
For anything about the company rather than the software, including legal and press, the address and the registered particulars are on the company page. Questions about what is stored and for how long are answered on the privacy page, and it is worth reading that before sending anything you would not want stored.
What to include if something is broken
What you were doing, what happened instead, and which browser on which kind of device. If a total looks wrong, the figures you typed matter more than anything else, because a number that is wrong is either a bug worth fixing today or a tax rate set to something unexpected, and those look identical from the outside.
Please do not send anything from inside a document that identifies your client. A description of the problem is enough, and a client's name and address in a support message is a copy of their details somewhere it does not need to be.