Conditional_effects rescale my input


I have fit a brms model is some rescaled data and now I’m trying to plot the mode using conditional_effects back in to original ranges.

By doing something like this

plot(conditional_effects(brm_c_5, effects = "t:w_c_ratio",cond = conditions5), rug = T, points = T)

I’m getting the following,

Since the input values for w_c_ratio range from -1 to +1 why the conditional_effects range is from -0.9 to +0.9?

Also, how could I rescale the legend in to original range (from 2 to 10)?