diff --git a/basicswap/basicswap.py b/basicswap/basicswap.py
index 581c4fc..ac59cea 100644
--- a/basicswap/basicswap.py
+++ b/basicswap/basicswap.py
@@ -1651,11 +1651,14 @@ class BasicSwap(BaseApp, BSXNetwork, UIApp):
         for c in check_coins:
             ci = self.ci(c)
             if self._restrict_unknown_seed_wallets and not ci.knownWalletSeed():
-                raise ValueError(
-                    '{} has an unexpected wallet seed and "restrict_unknown_seed_wallets" is enabled.'.format(
-                        ci.coin_name()
+                if not ci._have_checked_seed:
+                    self.checkWalletSeed(c)
+                if not ci.knownWalletSeed():
+                    raise ValueError(
+                        '{} has an unexpected wallet seed and "restrict_unknown_seed_wallets" is enabled.'.format(
+                            ci.coin_name()
+                        )
                     )
-                )
             if self.coin_clients[c]["connection_type"] not in ("rpc", "electrum"):
                 continue
             if c in (Coins.XMR, Coins.WOW):
@@ -13896,7 +13899,11 @@ class BasicSwap(BaseApp, BSXNetwork, UIApp):
                 "unconfirmed": ci.format_amount(
                     walletinfo["unconfirmed_balance"], conv_int=True
                 ),
-                "expected_seed": ci.knownWalletSeed(),
+                "expected_seed": (
+                    ci.knownWalletSeed()
+                    if ci._have_checked_seed
+                    else self.checkWalletSeed(coin)
+                ),
                 "encrypted": walletinfo["encrypted"],
                 "locked": walletinfo["locked"],
                 "connection_type": self.coin_clients[coin].get(
diff --git a/basicswap/interface/xmr.py b/basicswap/interface/xmr.py
index 1b34be2..7517777 100644
--- a/basicswap/interface/xmr.py
+++ b/basicswap/interface/xmr.py
@@ -257,6 +257,7 @@ class XMRInterface(CoinInterface):
                         )
                         raise
                     os.rename(walletpath, bkp_path)
+                    self._have_checked_seed = False
                     # Drop through to open_wallet
                 else:
                     raise
diff --git a/basicswap/wallet_backend.py b/basicswap/wallet_backend.py
index feda902..f876b50 100644
--- a/basicswap/wallet_backend.py
+++ b/basicswap/wallet_backend.py
@@ -810,7 +810,9 @@ class ElectrumBackend(WalletBackend):
 
         now = time.time()
         stale_threshold = 300
-        is_synced = height > 0 and (now - height_time) < stale_threshold
+        last_activity = getattr(self._server, "_last_activity", 0)
+        most_recent = max(height_time, last_activity)
+        is_synced = height > 0 and (now - most_recent) < stale_threshold
         return {
             "height": height,
             "synced": is_synced,