Bread Machine - where am I going wrong?

[Imabitbusyatthemoment]

I bought a bread machine a few months back, just a cheap one from Aldi middle aisle to see whether I’d use it enough to justify the cost of the Panasonic.

First few loaves were brilliant, came out perfectly. Since then whenever I try and bake wholemeal bread it just does not work. It appears to have risen beautifully and then at some point in the baking stage it sinks. It’s still edible and tastes good, but is pretty dense! White bread seems to be ok but I prefer wholemeal as standard.

I’m using the wholemeal setting and have tried variations of this basic recipe, which is on the side of the flour bag & on Doves Farm website, added in the following order.

335ml water
Tsp salt
Tsp sugar
10g butter (or oil equivalent)
500g wholemeal bread flour or malted bread wheat flour, usually Duchy or Waitrose brand
7g (one pkt) Allinsons yeast (tried Dove’s Farm too, also sank)

I’d be very grateful for any thoughts on where I’m going wrong.

Thanks

Blimey, it’s a minefield. 🤦‍♀️
From reading all the responses and ruling the suggestions that I’m already doing I think it might be that I’m using too much yeast. I’ll try reducing it and see how I get on.
Thank you for all the advice. I’ll report back!

I would test the machine with a premixed bread mix. Sainsbury's crusty breadmix is good. Then you know if it's your machine or the ingredients that's the problem.

Sorry, but the first mistake was buying a cheap machine. Panasonic is the way to go every time. You can pick them up on Ebay.

I would say too much yeast too, my breadmaker (Panasonic sorry!) specifies 1tsp for a small loaf (400g flour) which is loads less than a 7g sachet.
You could also try a 50/50 wholemeal and white then once that works add more wholemeal and less white until you get a perfect wholemeal loaf.