Sourdough and Starters

Is this mold? (new starter, day 2)

score never opens up wide

My starter has all the sudden become...weird. Why could this be?

Help! Is my starter contaminated?

Sourdough discard ——> active starter?

Sad beginner with a dense, irregular crumb

What is best cover to use on starter

Starter Rising too quickly

Have you ever had a flour that just doesn't work with your starter?

Starter smells eggy and sulfurus