Welcome Erik.
Sorry you are having issues with the emulator. You are not alone; MIT are aware of this problem and have a developer working on the issue. It will be fixed but perhaps not for a long time; perhaps MIT will comment.
Many developers, including myself are plagued with this identical issue. For us, the emulator is BROKE. The issue does not depend on whether you use the regular or code server; both provide the same white screen and refuse to update to the latest Companion.
Alternatives:
- use Companion and a real device to live develop. Yes, realize you want to use an emulator. MITs is broken for some users. If you or a friend have an older Android cell phone without a contract, it can be use with WIFI (really, I do this with several old phones to test). Borrow one or several students can share a device.
- use an alternative emulator (non-MIT); there are several that are free. An issue is getting permission to install on school PCs. Emulator will not Load (TalkToMe) Project (in the emulator) (emulator installs but will not update) - #16 by SteveJG
Someone hopefully will soon post other ideas. What to do depends on your school IT and what they will permit.