Keep the product account accurate
Describe the detergent and any additional treatment used, especially after changing products. Include whether a warning or prolonged rinse appeared.
Separate foam from water retention
A drum full of suds and clear standing water are different observations. Professional assessment can consider the sequence if ordinary model-specific care guidance does not explain the change.
A useful distinction
A new concentrated product used in the previous quantity can change the visible result. That possibility is context, not a diagnosis; a persistent programme stop or retained water may still need a separate assessment.