<p></p>
<p><b>@sqrrm</b> commented on this pull request.</p>

<p>I have tested this and it keeps the sign status.</p>
<p>Would be good if someone with revolut knowledge acked before merge.</p><hr>

<p>In <a href="https://github.com/bisq-network/bisq/pull/4453#discussion_r480046235">desktop/src/main/java/bisq/desktop/util/validation/RevolutValidator.java</a>:</p>
<pre style='color:#555'>> @@ -17,10 +17,13 @@
 
 package bisq.desktop.util.validation;
 
-public final class RevolutValidator extends PhoneNumberValidator {
+public final class RevolutValidator extends LengthValidator {
</pre>
<p>I would like someone with knowledge of this requirement to weigh in before merging.</p>

<hr>

<p>In <a href="https://github.com/bisq-network/bisq/pull/4453#discussion_r480046414">desktop/src/main/java/bisq/desktop/main/overlays/windows/UpdateRevolutAccountWindow.java</a>:</p>
<pre style='color:#555'>> +    @Override
+    public void show() {
+        if (headLine == null)
+            headLine = Res.get("payment.revolut.addUserNameInfo.headLine");
+
+        width = 868;
+        createGridPane();
+        addHeadLine();
+        addContent();
+        addButtons();
+        applyStyles();
+        display();
+    }
+
+    private void addContent() {
+        addLabel(gridPane, ++rowIndex, Res.get("payment.account.revolut.addUserNameInfo", Res.get("payment.revolut.info"), revolutAccount.getAccountName()));
</pre>
<p>Keeping lines shorter helps the reviewer. and it would also be in accordance with our style guide.</p>

<hr>

<p>In <a href="https://github.com/bisq-network/bisq/pull/4453#discussion_r480047023">core/src/main/java/bisq/core/payment/payload/RevolutAccountPayload.java</a>:</p>
<pre style='color:#555'>> +        // it has been the case before
+        String input = this.accountId == null ? "" : this.accountId;
+        return super.getAgeWitnessInputData(input.getBytes(StandardCharsets.UTF_8));
+    }
+
+    public void setUserName(@Nullable String userName) {
+        this.userName = userName;
+        // We only set accountId to userName for new accounts. Existing accounts have accountId set with email
+        // or phone nr. and we keep that to not break account signing.
+        if (accountId == null) {
+            accountId = userName;
+        }
+    }
+
+    public String getUserName() {
+        return userName != null ? userName : accountId;
</pre>
<p>Is this safe now that accountId can be null as well?</p>

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