Clarify read-only import workflow (#1850)

docs/FAQ/FAQ-UseWasabi.md

@@ -174,6 +174,11 @@ Open a text editor and paste the following wallet structure:
 
 Then paste your _SegWit Extended Account Public Key_ in-between the quotes of the field `"ExtPubKey": "paste segwit xpub here",` and your _Taproot Extended Account Public Key_ in-between the quotes of the field `TaprootExtPubKey": "paste taproot xpub here",`
 
+:::warning
+Watch-only wallets are not officially supported.
+Only take action if you're completely certain of what you're doing.
+:::
+
 You can also change the derivation path fields if you want to import a different derivation path.
 But this is only for advanced usage. 
 Notice that Wasabi only works with SegWit v0 bech32, and SegWit v1 bech32m (Taproot) addresses.
@@ -1587,4 +1592,4 @@ This can be done by specifying the port(s) at startup with the [startup paramete
 ### Where does the BTC exchange rate come from?
 
 Wasabi fetches the BTC/USD exchange rate from one of these exchanges: blockchain.com, Bitstamp, CoinGecko, Coinbase, Gemini and Coingate.
-It first tries to fetch the exchange rate from blockchain.com, if that's not possible it will try to fetch it from the next exchange in the listed order (and so on, until success).
+It first tries to fetch the exchange rate from blockchain.com, if that's not possible it will try to fetch it from the next exchange in the listed order (and so on, until success).