Can't get my pattern to open

try this link it might help you out.... cannot remember my Android tablet password pattern Also my tablet is not...

You have to do a factory reset

If you don't know the pattern which is the same thing as a PIN then you must do a factory reset, unfortunately you will lose all stored data on the computer.

Here's one method and you will see other suggestions to the right on the same YouTube page.

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Code to unlock RCA voyager 3 tablet

you dont,thats why you write down those patterns,now you have to hard reset and lose your info,but,here ya go,
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Follow the detailed instructions below on how to completely reset your RCA Android 7 Voyager (RCT6773W22) tablet.
Step 1. With your tablet off, press and hold the volume up (+) button and power button until you see the RCA splash screen with Nipper and Chipper. Release both buttons to reveal the Android bot on his back with a caution symbol above him.
Step 2. A new screen will appear asking you to use your volume up/down keys to move and the power button to select.
Step 3. Use the volume down (-) button to highlight "wipe data/factory reset." Once highlighted, select using the power button.
Step 4. A new screen will appear asking you to confirm your selection. Use your volume down (-) button to highlight "Yes -- delete all user data." Press the power button to select once highlighted.
Step 5. Once the tablet is finished wiping data, you may press the power button to select "reboot system now." This will restart your tablet.
Step 6. The system will begin to reboot and once again display the RCA logo with Nipper and Chipper. The next "Welcome" screen will prompt you to select your language of choice. Scroll through the options using your finger and press start when finished. Congratulations, you have successfully reset your RCA 7 Voyager tablet.

Hi, you can try resetting by following the below steps. It works for most tablets.
1 turn off the tablet
2 press and hold the power button and keep tapping the volume down button at the same time.
3 it should take you to recovery screen. Go to factory reset by using volume button and select by using either the center button on the tablet or the power button if there is no center button.
Please reply if it helped