Error - Cached cloud user presets exceeds upper limit

For the last couple weeks I have been getting this error when launching the current release of BambuStudio 1.8.4.51. Does anyone know how I can reduce the number of user presets that are already cached in the cloud, in order to get below the limit? Also any ideas on what the user presets number limit is?

Same error occurs with these betas (1.9.0.70 and 1.9.1.58).