# How can we help?

Answers about buying, installing and updating Qdev Techs products, and how to reach us.

This help center covers what our products have in common: licences, installing, updating, fixing the usual problems and asking for help. It applies to JustFans, JustJobs, JustFlows and JustDocs. Each product's own guide covers its settings in detail.

<CardGroup cols={3}>
<Card title="Licences" href="https://justdocs.qdev.tech/docs/help/buying/licences">
Regular or Extended, and what each one allows.
</Card>
<Card title="Before you install" href="https://justdocs.qdev.tech/docs/help/installing-and-updating/before-you-install">
What the server needs, for every product.
</Card>
<Card title="Update safely" href="https://justdocs.qdev.tech/docs/help/installing-and-updating/updating">
Back up, replace the files, run the update.
</Card>
<Card title="Common errors" href="https://justdocs.qdev.tech/docs/help/fixing-problems/common-errors">
A 500 error, a "Not Found" page, images that don't show.
</Card>
<Card title="Find the error in the log" href="https://justdocs.qdev.tech/docs/help/fixing-problems/reading-logs">
Where the error is written, and how to read it.
</Card>
<Card title="Contact support" href="https://justdocs.qdev.tech/docs/help/contact-support">
How to reach us, and what to include.
</Card>
</CardGroup>

## Product guides

Each guide lists the exact requirements, settings and update notes for its product.

- [JustFans guide](https://docs.qdev.tech/justfans/), the creator platform
- [JustJobs guide](https://docs.qdev.tech/justjobs/), the job board
- [JustFlows guide](https://docs.qdev.tech/justflows/), the AI workflow platform
- [JustDocs guide](https://docs.qdev.tech/justdocs/), the documentation platform

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