Anki is extremely slow and there's no card after installing ankihub

[Ahmed7]

The reason for the slow down is answered here: Why is Anki super slow when installing an AnkiHub deck?

@houtian

Besides, no new cards were added at all, except for some instruction.

If you go to browse → tags on the left hand side → can you see #AK_Step1_V12? If you can, it means all the cards were installed successfully