Let's first access your account using a private or an incognito browser. This helps us isolate the error for a possible browser-related. You can use any of these keyboard shortcuts:
Ctrl+ Shift + N for Google Chrome
Ctrl + Shift + P for Mozilla Firefox and Microsoft Edge
Command + Shift + N for Safari
Once logged in, you can try accessing your customer's invoice again. If you can no longer see the error, you may want to clear the cache of your regular browser. Also, you can try using a other supported web browser to further isolate the issue.
If the issue persists, I'd recommend contacting our Customer Care team. A specialist can further look into the error and determine its root cause and resolution. Here's how:
Go to Help menu (?).
Select Contact Us.
Enter your concern, then select Let's talk.
Choose a way to connect with us:
Start a chat with a support expert.
Get a callback from the next available expert.
Just a heads-up, we are open from Monday-Friday 8 AM to 4 PM PST. This ensures our agents can reach out to you as soon as they’re available. You can check to this link anytime if you want to know our support hours and contact us at a time convenient to you: Support hours and types.
You can always drop a comment below if you need more help from us. We're just right here to assist you.
We have an investigation where some of our users getting the Unexpected problem: -30006 when applying a payment to an invoice. Our product engineers are aware of this problem and are now working hard to fix this the soonest.
I recommend giving our Customer Care Team a call to add your account details to the list of affected users. This way, you'll be updated as soon as a fix is implemented. Here's how:
Click the Help menu in the upper-right hand corner and click Talk to a human.
Type in "Talk to a human", then press Enter.
Look for I still need a human and click on it.
Select Get help from a human.
Choose between Chat with us, Schedule an appointment, or Have us call you.
Please check out our support hours to ensure that we address your concerns on time.
If you have further questions or concerns, feel free to reach back out anytime. Stay safe.