Anthocyanina

You have to understand the format of the .xdc file that instructs the compiler how to interpret the pins. The error message is above your source file so we cannot see everything but one thing I noticed is that you used a "led" signal. The Basys 3 has several leds so they are numbered. Go through the tutorial again, you should replace on your .xdc files all mentions from "LED[0]" to "led". I don't know the name of t he clock pin you used but I hope you understand the logic of whay you have to do from my answer

Hi @Anthocyanina,
@Kvass and @chclau have correctly addressed the .xdc pin name discrepancy that is giving you the error (Vivado, wisely, is very picky about making sure the names of pins match as intended, capitalization and all, rather than trying to make some interpretive guess about what you are wanting).
The critical warning about the board part definition is indicative that you you did not install (and then select) the Digilent board files (usually you have to install them with Vivado closed so it can properly detect them, and then you can select the Basys 3 board itself during the initial project creation rather than the Artix 7 35T FPGA component); the board files themselves aren't necessary for HDL designs, but are helpful if you do block design work and want to use Digilent's pre-configured materials for some of the on-board components.
Thanks,
JColvin

Hi @Anthocyanina
Just increase the height of the Bus or the interpreter you are using, specify format, skip bits if needed...
Alternatively in the Script tool you can add plots or transfer the Logic Analyzer data to Scope channel data or Wavegen...

Hi @Anthocyanina,
To the best of my knowledge, Digilent has not done any testing to find out the expected durability of the pins.
There is not currently an adapter that is just a straight female to male 2x15 pin connector either, mostly because as zygot suspected, we have not seen customer interest for it. I did do a bit of searching on Digikey (you of course can look wherever you prefer) and found some adapters that I believe are what you are looking for (digikey search results, though you might need to further filter the results to get longer post pins on the adapter).
Thanks,
JColvin

Hi @Anthocyanina
The next version will have Ctrl/Shift value adjustment speed for the entry fields (comboboxes) using wheel and keyboard arrow keys.
Than you for your post.