Not that intelligent dosing

Hello lovely washing machine forum people, I have a question you may be able to help e with. I have a secondhand Bosch intelligent dose washing machine and it has stopped dispensing washing liquid and softener. If I am right about the part that needs replacing it’s about £130 and I don’t think it’s worth it. Obviously, I can add washing liquid in the drum, use 2 in 1 or do a rinse afterwards to add softener, but, what I am wondering is if the washing machine would dispense with a normal, unintelligent shall we say, draw and if so, or just to try it out, what draw might fit it? The E-Nr is WAS28840GB. Thank you in advance and I look forwards to any responses.