You assume the bonus is already in your balance because you claimed it, but the screen still shows a zero bonus and no pending credit; the most common cause is a missed or incomplete bonus step in the cashier. The same gap between what you expect and what the screen shows drives most support requests about Quatro Casino.

Phone browser loading and game display failures

On a phone, the page may stall on a blank area, show broken game tiles, or drop the connection when you tap a title.

• An unstable mobile data or Wi-Fi signal interrupts the page load.
• An outdated phone browser cannot render the current site script.
• Too many open tabs or background apps consume memory.
• A cached page holds old files that conflict with the live site.
• A network filter or private DNS blocks part of the site content.

1. Move to a stable Wi-Fi network and reload the page in the phone browser.
2. Close every other tab and background app before you try again.
3. Clear the browser cache and cookies for the site, then reopen it.
4. Update the phone browser to its latest version through the official store.
5. Turn off any private DNS or content blocker for the session.
6. Switch the phone to desktop mode to test whether the page renders.
7. Disable battery saver, which can pause scripts during loading.
8. Restart the phone to free memory and reset the network stack.
9. Try a different browser to isolate a browser-specific fault.
10. Log out and back in so the session picks up fresh site files.
11. Test the same page on another device to confirm whether the fault is local.

Contact support when the same failure appears on a second device and a second network.

Stuck identity checks and rejected documents

The verification screen may stay on a pending status for a long time or return a document as unreadable, with no clear reason shown.

• A photo is blurred, cropped, or covered by glare.
• The document has expired or the details do not match the account name.
• The file format or size falls outside what the upload form accepts.
• Part of the document is hidden by a finger or a fold.
• A mismatch between the address on the document and the account details triggers a manual review.

When a document is rejected, the player usually needs to upload a fresh copy rather than resend the same file. At Quatro Casino bonus, the review team compares each document against the account details, so a clear, current document speeds the check.

1. Open the verification area and note which document type is requested.
2. Place the document on a flat, well-lit surface before you take the photo.
3. Capture all four corners and every line of text in the frame.
4. Avoid flash glare and shadows that hide printed details.
5. Save the image in the format the form accepts, without heavy compression.
6. Upload the new copy through the verification form, not by email.
7. Confirm that the name and address on the document match the account exactly.
8. If a document is expired, replace it with a current one before uploading.
9. Submit one document at a time and wait for the status to change.
10. Keep a copy of each uploaded file in case a second review is needed.
11. Do not open a second account to bypass a stuck check; it will be linked and delayed.

Contact support when every new upload is rejected without a stated reason.

Sign-in failures and account locks

The sign-in page may reject a correct password or show a lock message after several attempts.

• Caps Lock or a phone keyboard autocorrect changes the password.
• A saved password in the browser is out of date.
• Too many failed attempts trigger a temporary lock.
• The email or username was typed with a trailing space.
• A password manager fills the wrong saved entry for the site.

1. Type the password manually in a plain text field to see every character.
2. Check that Caps Lock is off and the keyboard language is correct.
3. Remove any space before or after the username or email.
4. Clear the saved password for the site in the browser settings.
5. Use the password reset link sent to the email on the account.
6. Set a new password that you have not used on other sites.
7. Wait for the temporary lock to clear before you try again.
8. Sign in from a single tab and avoid repeated rapid attempts.
9. Disable password autofill for the session and enter the details by hand.
10. If the reset email does not arrive, check the spam folder and the email address spelling.
11. Do not create a new account while the old one is locked; it splits your bonus history.

Contact support when the reset link fails and the lock does not clear after a full day.

Keep your account email current, your documents clear and unexpired, and your browser updated; that single habit prevents most bonus, verification, and sign-in problems before they start.