Admin Footer Text problem

I had this plugin network activated. I also had the Rebrand Meta, and Ultimate Rebrand network activated.

I tried to add text to the footer, and also want to see if I could add several lines of text to the footer to find out how much space could be used. The footer area didn’t expand down, but rather the text appeared to overlap with the bottom of the admin dashboard page above the footer and is covering the “save” buttom.

Not I can not delete it.

I’ve tried deactivating the footer. Then found out that if I’m using the Ultimate Rebrand, the others should not be activated.

How can I get it fixed?