docs: add Frequently Asked Questions section to FAssets agent guide

docs/fassets/guides/2-faq.mdx

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+---
+sidebar_position: 2
+slug: faq
+title: Frequently Asked Questions
+description: FAssets Agent Frequently Asked Questions
+tags: [intermediate, fassets, bitcoin, dogecoin]
+authors: [fassko]
+keywords: [fassets, xrp, btc, doge flare-network, flare-network]
+---
+
+### What are the FAssets agent icon file requirements?
+
+A link to your FAssets agent icon should end with `.png`, `.jpg`, `.svg`, etc., and **must not** be the same as the example provided by the bot.
+
+### Can an agent's logo, description, or name be changed after approval?
+
+No, it is not.
+
+### Can I register a new management address if one is already whitelisted in my Telegram account?
+
+No, you would need a new Telegram account.
+
+### What is a management address?
+
+It is an EVM address you control. Ensure your seed phrase remains secure.
+
+### What is an owner's address, and is it different from a work address?
+
+Work and owner addresses are the same and are referred to as `owner.native.address` in your `secrets.json` file. This address provides collateral for your vault and pool.
+
+### How can I change the agent's fees?
+
+Use the command:  
+`updateAgentSetting <agentVaultAddress> <agentSettingName> <agentSettingValue>`  
+Alternatively, update your `tmp.agent-settings.json` file.
+
+### Do I need my agent running all the time?
+
+Yes, for an agent to stay operational, it must run continuously.
+
+### What should I do if my agent database is corrupted, lost, or deleted?
+
+Do not restart the agent, as this may result in double payments. Instead, create a new agent.