SLKR GL Ultimate Materials Issue

I was progressing towards getting the ultimate ability for SLKR. But I did my 9th attempt of the last tier and I couldn't do anymore.

I checked my ultimate materials and I still only had 9 instead of the 10 needed to upgrade the ability. However, if I attempt the ultimate tier again I cannot get any rewards.

For additional context I also do not have any other GL journey activated and the only other one I have (JML) already has his ultimate fully upgraded.

The pictures are attached for proof