Expensive clone: $125 https://www.aliexpress.com/item/1005001909644558.html
Cheaper clone: $45 https://www.aliexpress.com/item/1005002186465775.html

I have only used the original p-can - there is a swedish distributor for it here:
https://lawicel-shop.se/elektronik/kommunikation/can/pcan-usb/

Both links you provided seem to be compatible - there are screenshots, etc.
With faster shipping and VAT the final price in Sweden would be about 1000kr.

The 6mm spacer ring is needed because the speakers are a bit too large for the opening in the door.
Since the speaker is a cone, if you position it 6mm away from the whole the diameter that would make contact with the shole decreases.
No sure about the grill that comes with the speakers... I suspect that they would fit, but not sure how good. I will see if I can try that this weekend.

http://www.vehiculeselectriques.fr/viewtopic.php?f=76&t=13235

Congrats!
The vacuum pump is noisy.
Be careful - 35% indication may not be what it really is.
Zebra batteries estimate battery SOC based on many factors and need a "recalibration" very often.
Don't drive much - check the voltage of the battery and see how that matches the SOC estimation.

Here are couple of graphs to help you out:
https://www.evmonitor.info/2019/12/zebra-battery-profiling-revisited.html
https://www.evmonitor.info/2018/07/zebra-battery-profiling.html
https://www.evmonitor.info/2018/07/zebra-battery-warmup-and-charge.html

I am not going to win any competition with these new speakers.

The sound is much, much better than the original speakers. Especially having in mind that it is a bolt on install for only 300 kr.
I did not need to cut anything, the wire connectors matched the speakers - so no need for soldering, it took literally 5 minutes to install.
 
I had to fiddle with the stereo settings abit:
 - switch off x-bass (or loudness) (the speakers vibrate violently if on)
 - switched off sound profiling (did not like the sound)
 - increased bass to +5
 - increased threbble to +2

Then I burned a CD (it took a while to find a CD and a burner) with mp3 files and I could listen to it in the car!

I now have noticed that sometimes when I start the car the stereo will show "NO FILE" message... I need to eject and reinsert the disk to get the disk to work again... have to figure this one now.

I found a new speakers that turn out to be direct match of the original ones, but 13 cm instead of the original 10cm.
The model is Pioneer TS-G1320F.
From here https://www.amazon.se/gp/product/B07573RGZ7
Around 300kr with shipping included.

The inner bolt pattern is exactly the same as the one on the Think door.
There is a need for 6mm adapter ring so the new speaker sticks out compared to the original one, but the speaker cover remains the same.
I will upload some photos and a 3d print model of the adapter ring if there is an interest.

Edit:
Here are some photos:
https://photos.app.goo.gl/C2bP3DpDkCJHfkUt7

Edit 2:
Here is the 3d print file:
https://www.thingiverse.com/thing:4831077
 
 

Thanks for the tip!
That explains some of the strangeness... it is visible on my photos that the original cover has one of the pins that are supposed to fit in the door a little off, while if you look at the door opening all 8 or the openings are symmetric.
I am very happy with the new covers, but it is definitely more cost effective to order new from ebay.

Does anyone know if this is written for zebra-battery or enerdel? I have a enerdel-battery now, and it looks so healthy i have a hard time beliveing that it really has no failed cells 

There is an enerdel version of nikometer software that shows minimum, average and maximum cell voltage. Try it.