# Qdev Help Center

> Answers about licences, installing, updating and fixing Qdev Techs products, and how to reach support.

Each page below is available as Markdown. Every page in one file: https://justdocs.qdev.tech/docs/help/llms-full.txt

## Help Center

- [How can we help?](https://justdocs.qdev.tech/docs/help/how-can-we-help.md): Answers about buying, installing and updating Qdev Techs products, and how to reach us.
- [Buying](https://justdocs.qdev.tech/docs/help/buying.md)
- [Regular or Extended licence](https://justdocs.qdev.tech/docs/help/buying/licences.md): Our products are sold on Envato Market. The licence decides whether your users can be charged.
- [Find your purchase code](https://justdocs.qdev.tech/docs/help/buying/purchase-code.md): The code that proves your purchase. The installer asks for it.
- [Installing and updating](https://justdocs.qdev.tech/docs/help/installing-and-updating.md)
- [Before you install](https://justdocs.qdev.tech/docs/help/installing-and-updating/before-you-install.md): What every Qdev product needs from the server, and the four checks that save the most time.
- [Update safely](https://justdocs.qdev.tech/docs/help/installing-and-updating/updating.md): Back up, replace the files, run the update, then check the basics.
- [Fixing problems](https://justdocs.qdev.tech/docs/help/fixing-problems.md)
- [Common errors](https://justdocs.qdev.tech/docs/help/fixing-problems/common-errors.md): The problems we see most often, and how to fix them.
- [Find the error in the log](https://justdocs.qdev.tech/docs/help/fixing-problems/reading-logs.md): Laravel writes every error to a file. The last one usually says exactly what's wrong.
- [Contact support](https://justdocs.qdev.tech/docs/help/contact-support.md): How to reach us, and what to include so we can help the first time.