@Mr-B Hi there, this printer is compatiable with 8GB/16GB/32GB TF card.

For the problem you mentioned, you just need to use the TF card reader to insert the TF card to your computer and then right click to format it with FAT32, 4096 bytes.

@Porter Hi there, we rechecked and confirmed that there is not problem of the app. If the problem still exist, please take a screen recording and go to "Me>about>share log" and send these info to our support email, we will check and solve the problem for you ASAP. Thanks.

@ellis-fortuna Hi there, you can get some modeling skills from below link:
https://www.tinkercad.com/learn/designs?collectionId=OSZ5W2BL1W5N51F&fbclid=IwAR3I8mAvr__hcAakVY4b23T5-ourM-0Z2hQ-Us2t4uMih2ixioDDT964TxI

And below are some modeling software:
Desktop Software:

• Blender
• SketchUp
• 3DMax
  Web-based Software:
• Tinkercad
  Mobile Apps:
• SketchUp (Mobile)
• Tinkercad (Mobile)

After connecting the printer with the APP and the wifi, you could go to “Me>Profile” on the APP and you will see a “+” option in the bottom left corner of the page.Then you could upload your own STL format models files to the app and to print it.

@SpoodyHollow Hi there, so sorry that our printers cannot use the AMS machines. If you want to change the color of the filament, you can go to "Prepare>Load/Unload filament" on the printer to change the filament color.