I can't help with setting up an account on TM_IMG, but someone will be along to help soon. Once that's sorted...............
Try this........
Step 1 in the TM_IMG site........Upper right, hit the upload tab.
I usually use "Browse from your computer" dead centre
Open the images from your computer, and they appear here......select Album, Category, Auto Delete, whichever you want. Then hit upload.
Click on the uploaded image, scroll down and you see this: You need Full Image: BB Code: Which is number 2 on the second block. Hit copy on the right hand side.
Then open the TM post, and paste the link. Check by hitting preview that it's the image you want. Then Post.
PS, yeah I do have 2537 images saved here.............................
DaveW '05 Red Roadster S1 '16 Yellow (Not the only) Narrow AR GDI Plus 4