thats funny dont let upload keep say invalidNotice you're having trouble with uploading images on the site. Sorry for the extra work. Here is a little tutorial to help:
1. Go to https://imgur.com/
2. Upload your image by clicking on the New post (green button on the top left hand corner, next to logo).
3. Click Choose Photo/Video then Select your file.
4. Once the image is uploaded, hover the mouse over to the image and you should see a button with 3-dots in it.
5. Click on that and select "Get Share Link" > Under BBCode (Forums) click Copy link
6. Paste that link into our post editor like the following. If you have multiple images, you will be including several links.