Sorry, but why risk and pay for this 290€ when you can get Force E1 spider for 310€, even less used.
Edit: 270€ on bike-components, if somebody needs. 

Because of using Shimano Chain rings, a 24 spindle and already having a carbon crank set with Easton mount....

Same for me, I can only connect via the iPhone, my Android (Mi15) does not connect.
That being said, I did not bother using the APP with the new UI so far.

So you're saying I should go for something more expensive, even on AliExpress? Like this one?
https://it.aliexpress.com/item/1005008662129206.html

Or do you have any brands to recommend?

I've been enjoying 2 skinsuits from Ali so far.
https://ja.aliexpress.com/item/1005008414330068.html?spm=a2g0o.productlist.main.6.1386QfLNQfLN30&algo_pvid=ee25c59a-393b-446b-b2bd-b0cf353adb7a&algo_exp_id=ee25c59a-393b-446b-b2bd-b0cf353adb7a-5&pdp_ext_f=%7B%22order%22%3A%2223%22%2C%22spu_best_type%22%3A%22price%22%2C%22eval%22%3A%221%22%2C%22fromPage%22%3A%22search%22%7D&pdp_npi=6%40dis%21JPY%2150937%2113538%21%21%212177.50%21578.71%21%40212a70c017742283680585995e1ec2%2112000044950884658%21sea%21JP%210%21ABX%211%210%21n_tag%3A-29910%3Bd%3A4c1e0d0a%3Bm03_new_user%3A-29895%3BpisId%3A5000000197845706&curPageLogUid=wmUXGhGljPPj&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005008414330068%7C_p_origin_prod%3A&tblci=GiAVopNGx94PfImHdB0QhQ6T_GgBTd1a8RHSIJKeKs0QtiDA9m4orM3p4Ma8qrgaMPi_Rw
- Very good fit and perfect for long days in the hot weather, only down is the rather small single pocket on the back.
https://ja.aliexpress.com/item/4000411945210.html?spm=a2g0o.productlist.main.7.24f7dLbvdLbvEu&algo_pvid=eaa75454-f5e6-423e-bf2f-b31901e16076&algo_exp_id=eaa75454-f5e6-423e-bf2f-b31901e16076-6&pdp_ext_f=%7B%22order%22%3A%22214%22%2C%22eval%22%3A%221%22%2C%22fromPage%22%3A%22search%22%7D&pdp_npi=6%40dis%21JPY%217058%215223%21%21%2143.80%2132.41%21%402102eaa317742283568298589e21b0%2110000001770658247%21sea%21JP%210%21ABX%211%210%21n_tag%3A-29910%3Bd%3A4c1e0d0a%3Bm03_new_user%3A-29895%3BpisId%3A5000000201761110&curPageLogUid=cG6BiXwVQD2S&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A4000411945210%7C_p_origin_prod%3A&tblci=GiAVopNGx94PfImHdB0QhQ6T_GgBTd1a8RHSIJKeKs0QtiDA9m4orM3p4Ma8qrgaMPi_Rw
- OK and less stretchy skinsuit. Using for early morning hot summer rides up to 2 hours long. Only downside is the leggripper which is stiched on, not too comfortable.
Now I have the BCBE skinsuit on order and will report back once I did receive it.

Did anyone observe a difference in offset depending if you are in which front chain ring you aremin?

I'll pass the current iteration as it is likely that we see a carbon version within this year and the price should also go down once more vendors started to innovate the bottles and cages.

According to experiences on weightweenies, park tool self adhesive patches on a cleaned surface are bulletproof for TPU

I've been ruining my initial TPU's (way too expensive Schwalbe...) with these patches.
Be careful NOT to use the sandpaper as mentioned in the manual.
That ParkTool doesn't point this out does not speak for this company.

Now I'm just using the repair kit from RideNow that has the glue and standart TPU pieces. The included alcohol wipes are also not too good and I switched over to tissue and alcohol which makes lasting patches possible.

I'm using TPU tubes starting from the release of the Aerothan tube.
bought 2 of those and got a snake bite, this was the end of this tube because the instructions from Schwalbe where not right for the repair.

then I found the very initial RideNow tubes and started to use the 36gr version with black valves. those where mostly fine but one valve head simply blew off, luckily I was off the bike at that time.
I tried the green TPU's as well but those where rather weak at the valve stem, hence I stopped using them.
The purple TPU's with golden valves where quite good but I felt them being heavy and I did not like the valve head.

Now I'm back to RideNow 24gr with metal stem, which are now also available in black. not the cheapest but I'm very satisfied with them.
Only draw back is that start loosing a bit more air after a couple of thousand KM's and hence I replace them after 5000km.