Ok, so fine. I read the forums and the help center, and the two paths forward seem to be define the TMC2208 driver as standalone in Marlin and upload it to the printer, or just remove the TMC2208 driver and plugin the A4988 driver, define it in Marlin, and upload to the printer. However, when I do either of these two workarounds, E1 seems to disappear in the checks when connecting with Pronterface:
Printer is now online.
echo: Last Updated: 2020-03-31 | Author: (none, default config)
However this user also had an LCD issue, and a new board was just issued for that. I apologize in advance if this question was already answered. If there is no workaround except a new board, then Im just going to abandon the dual extrusion.