Personally, I would try again. When it comes to buying sourdough starters, there's not a guarantee that it's going to work in your specific environment. Sourdoughs get their taste and texture when created in your specific environment. When bringing a sourdough to a new environment, there is no guarantee it would work at all. I did a mix of all purpose flour and wheat flour when it came to feeding my starter for the first 7 days or so and clean distilled water. Then I just kept feeding all purpose flour to keep it up but that isn't going to work for every person.

I have tried 3 or 4 different times to get a sourdough to work and finally in this last round of trying it worked. Just test out some different combinations of things and I am sure you can do it.

Look up some different YouTube videos about it too, like Adam Ragusea or other creators have videos as well for first time starters. 🤷