Frequently Asked Questions

Crypto-only billing via Cryptomus, 150+ Countries, flagship USA Main numbers, rentals, and Data eSIM—search below or open a topic.

Crypto-only payments

Cryptomus: USDT, BTC, LTC, ETH, SOL, TRX & more

Secure & Anonymous Crypto Payments — no cards or bank transfers. Official guide covers networks (e.g. TRC20/ERC20 for USDT), QR checkout, and safe Instant Crypto Top-up via Cryptomus.

Read the guide

Help center

What payment methods are accepted?
OTPGrove is a privacy-first platform, so we exclusively accept cryptocurrencies via Cryptomus. You can pay with USDT (TRC20/ERC20), BTC, LTC, ETH, SOL, TRX, and many other major coins. No credit cards or bank transfers are required, ensuring your total anonymity. Step-by-step top-ups: How to pay with crypto.
Which countries do you support?
We provide temporary and rental numbers for 150+ countries across the USA, Europe, Asia, and Africa. While we support global activations, our USA Main lines are our flagship product with the highest success rate for high-security apps.
How do I add funds to my wallet?
Log in, open Add Funds (Wallet), and complete checkout through Cryptomus. Choose from supported coins such as USDT, BTC, LTC, ETH, SOL, TRX (exact options appear on your invoice). Send the precise amount to the address or QR shown—your balance updates after network confirmation (typically about 1–5 minutes). Full walkthrough: How to Pay and Top Up Your Balance using Crypto.
How does the USA Temporary Number work?
This is a one-time use number perfect for instant OTP verification. Once the SMS is received in your dashboard, the session is complete. It's our most popular product for platforms like WhatsApp, Telegram, and PayPal.
How do I order a temporary number in the dashboard?
Choose a Service, then optionally select your preferred State. The price appears under the service. Click Order Number to receive your line. You will see the number and timer under SMS Details. Wait for the SMS—no need to refresh; when it arrives, your code appears automatically.
What is the difference between Temporary and Rental numbers?
Temporary numbers are for one-time SMS verification. Rental numbers allow you to keep the line for an extended period (from days to months), which is ideal for managing accounts that require frequent re-verification.
How long does SMS verification take?
Most verifications complete within 1–5 minutes. Some services or carriers may take slightly longer.
What if I don't receive the SMS?
Our system operates on a 'No OTP, No Pay' policy. If a number fails to receive an SMS within the time limit, the amount is automatically refunded to your OTPGrove wallet balance instantly.
How do I activate the Data eSIM?
After purchasing a data plan with crypto, you will receive a QR code instantly. Simply scan it with your eSIM-compatible device to enjoy high-speed global data without a physical SIM card.
Are the phone numbers real and non-VoIP?
Yes—our USA Main inventory emphasizes real U.S. non-VoIP routes with high success rates for strict apps. We also offer numbers across 150+ countries for global workflows. Legitimate use only; success varies by target platform.
Can I use the same number for multiple verifications?
Temporary numbers are typically single-use per purchase. Rentals let you reuse the same line for multiple SMS events during the rental window. Some platforms may block previously used numbers—when in doubt, use a fresh line for a new account.

Still have questions?

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Our team is available 24/7 for billing, numbers in 150+ Countries, USA Main, rentals, and eSIM—message @otpgroveapp anytime.