Site is Slow, Glitchy, Has Weird Symbols, Display, etc. – DIVE Into Math & Science

Current Status: Online. We have more than 20k users and no reported issues.

These issues are caused by not using Firefox or a setting on your computer or device. Please follow the steps below to quickly solve this issue. If you had a technical issue during an assignment and would like to reset or change the grade, please see: Request Grade Changes & Resets

Need Help? If you would like a tech to walk you through the steps, Contact a Tech Specialist or call us at 936-372-6299 M-F from 9-5 CST.

✅ 1. Update your Operating System

Mac: https://support.apple.com/en-us/HT201541
Windows: https://support.microsoft.com/en-us/windows/update-windows
iPad / iPhone (iOS): https://support.apple.com/en-us/HT204204
Android: https://support.google.com/android/answer/7680439

✅ 2. Update Firefox

To avoid display and grading issues, you must use Firefox

Open Firefox, go to Menu (☰) → Settings → General → Firefox Updates and install any available updates.

If you don't have it, download it here: https://www.mozilla.org/firefox/

If using a mobile device, download it from your App Store.

✅ 3. Make sure you have a stable internet connection

Please see: Minimum required internet speed or bandwidth

✅ 4. Do Not Disable JavaScript

Firefox has JavaScript enabled by default. Please, DO NOT DISABLE IT! JavaScript is required for quizzes, videos, and course features to work properly.

✅ 5. Allow Cookies

In Firefox, go to Settings → Privacy & Security → Cookies and Site Data and make sure cookies are enabled.

🛡️ 6: Content Filters or Parental Controls

If your device or network uses Parental Controls or content filtering software like Bark, Qustodio, Covenant Eyes, Circle, or school filters, there are several sites that must be whitelisted. See: Safe Sites for New Moodle Site

If you're unsure, type deviceinfo.me into your browser → select Content Filtering from the menu.

✅ 7. Login on one device and one browser at a time

If you are logged in on one device or browser (Firefox), then log in on a different device or open a different browser at the same time, it may end your original session.

✅ 8. Use a recommended device

Use a computer or tablet. Phones can be used but are not recommended.

✅ 9. Try an Incognito Window

Open Firefox
Click the menu (☰)
Select New Private Window
Log in and try the assignment again

*If you have parental controls or content filtering software that prohibit using incognito window, please temporarily turn it off and supervise your student. If it works, read the info below.

👉 If the course works in Incognito mode, this means the issue is caused by:

Internet Filtering Software or Parental Controls that are not setup properly. Click here: Instructions for Filtering and Controls
Old cookies: Follow the steps below to clear the old stale cookies.
Then try the course again.

✅ 10. Clear Cached Data for JUST Our Site

Open Firefox and visit https://dive.unhosting.site
In the address bar, click the sliders (tune) icon — it looks like three horizontal lines with small circles on them — to the left of the website address.
Click Clear data
Restart Firefox and try again.

✅ Step 11. Logout of All Other Devices & Browsers

To prevent errors that can cause lost work or failed quiz submissions, each user can only be used on one device/browser at a time.
✅ If a user logs in to their account on a computer or device, they can open multiple tabs or windows in the same browser and stay logged in.
If a user logs in to their account on one computer, then logs in to the same account using a different computer or device, it will log the user out of the first one.
⚠️ But if someone logs in to the same account from a different device, different browser, or Incognito/Private window, Moodle treats this as a new login session.
When that happens, Moodle will log out the earlier session and show the message: “Your session has expired. Please log in again.”

📸 Need Help?

If you're still experiencing issues or would like a tech to walk you through the steps, Contact a Tech Specialist or call us at 936-372-6299 M-F from 9-5 CST.