This can only be caused by a few things
Belt slipping.
Idler wheel tight and causing the belt to screech.
A very outside change it is the rear drum bearing or motor bearings.
Take the top off, put a length of plastic tub in you hand and follow the sound.
There are several possible causes of a squealing dryer, including unlevel installation, damaged drum bearings, a faulty drive belt, a worn out idler pulley, a damaged roller shaft or a malfunctioning motor. Discovering the cause of your squeaky dryer can help you determine how to resolve the issue.
You may be able to obtain a service manual for the Creda T620CW dryer by contacting the manufacturer or a local appliance repair service. They may be able to provide you with a copy of the manual or direct you to a reliable source. Alternatively, you can search for the manual online through websites that specialize in appliance manuals or user forums where others may have shared the manual.
There is no definitive instructions to so this. Normally, go around to the back and remove screws or press catches to loosen and remove the top. Remove screws at the front kickplate. Pull the door and front forward, remembering that there are wires attached. Replace the latch and rebuild.
https://www.google.com/search?q=Blomberg+Dryer+dv17542+replace+lock+body+assembly
similar to this on a Whirlpool
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we had a similar problem happen with our Hampton Bay Renaissance fan. It turns out that the warranty does not cover this by the way. The lifetime warranty you refer to is only on the fan motor. This is common with most fan manufacturers- just wanted to let you know about this because I think your interpretation of the warranty is wrong.
This fan is really hard to find and so are the parts for it. I would recommend trying to call Home Depot where you bought it or call the Hampton Bay customer support phone number. You're likely going to have to go through one of those mediums. I feel that the second thing (calling technical support for Hampton Bay) will probably connect you to Home Depot too because Hampton Bay is a house brand of Home Depot.
We were able to find the phone numbers we needed here:
https://hampton-ceilingfans.com/hampton-bay-ceiling-fan-reviews/hampton-bay-renaissance-ceiling-fan-light-fixture-popped/
They always screech when the belt slips. There are usually only 2 reasons this happens.
The drum slides at the lower front are worn out and creating too much friction.
Or
The rear drum bearing has worn out, and again too much friction.
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