> For the complete documentation index, see [llms.txt](https://sigm-algo.gitbook.io/sigma-algo-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sigm-algo.gitbook.io/sigma-algo-docs/getting-started/faqs.md).

# FAQs

**General Questions**

* **What is Sigma Algo?**
  * **Answer:** Sigma Algo provides advanced trading tools and educational resources to enhance your trading performance on TradingView.
* **Which trading platforms are compatible with Sigma Algo tools?**
  * **Answer:** Currently, our tools are compatible with TradingView.

**Account and Billing**

* **How do I change my subscription plan?**
  * **Answer:** Log in to your account at [www.sigmaalgo.com](http://www.sigmaalgo.com/), go to **Account Settings** > **Subscription**, and select your new plan.
* **What payment methods are accepted?**
  * **Answer:** We accept major credit/debit cards, PayPal, and cryptocurrencies like Bitcoin and Ethereum.
* **Is there a free trial available?**
  * **Answer:** Yes, we offer a 14-day free trial for new users on the Alpha Plan.

**Technical Support**

* **I'm having trouble accessing the Sigma Algo indicators on TradingView. What should I do?**
  * **Answer:** Ensure that you have provided the correct TradingView username in your Sigma Algo account. Also, check that your subscription is active. If issues persist, contact our support team.
* **Can I use Sigma Algo tools on multiple devices?**
  * **Answer:** Yes, you can use our tools on multiple devices, but simultaneous logins may be limited based on your subscription plan.

**Educational Resources**

* **Where can I access the Trading 101 course?**
  * **Answer:** The course is available in the **Trading 101: Fundamentals** section of this guide and in your account dashboard under **Educational Resources**.
* **Do you offer personalized coaching or mentorship?**
  * **Answer:** Personalized coaching sessions are available for Sigma Plan subscribers or can be purchased separately.


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