@Dale-Merrigan you can use kiri:moto to slice online, it also can be installed from google play store(not sure about app store for i phone). make sure you use the right machine in settings. then use poloprint cloud to upload it to your printer

@parwrench to clarify. be mindful of what bolts go where on the new one.

@printer-14 pretty much. It bolts to the stepper. They are a standard size 31mm center of bolt. providing the same nema, which on a tina2plus it is.

@Tina-j did you reformat the card on a pc? will the pc even see it? them things go bad alot

@printer-14 i have a tina2plus. i replaced my extruder mechanism with one from and ender3v2 i had laying around. works sound for me. after that yes the connector is replaceable .

@Natedawg a 1 kg roll holder isn't exactly a simple deal. Due to size and the arrangement of things the machine needs raised off the table to clear the extruder drive. Anything else compromises feed alignment.
You can read some of the other posts about where to get files from the Internet to print. There's several standalone roller type filament holders I think thingaverse has one specific to be printed on tina2 due to size of the build plate

@jens-uhsemann and wiibuilder2 . It should be on the sd card

The links don't seem to work on my phone, but they did work on my laptop.

@Anna-McGuigan
I installed the poloprint cloud app from the play store on my android phone.
I'm pretty sure it's in the app store for iPhone.
There's a windows app also.
Poke around the forum a bit, it's not too big. Lots of great links and tips.

@Alyssa-Lynd
A photo would be helpful.
If you have poloprint cloud app installed, in the tutorial section there information on slicer settings. From my experience I will guess (and only a guess) you are experiencing over or under extrusion. Other than setting the z offset, it's the only adjustment I have to do. It is per roll of filament specific, and I have seen extrusion factors change in the middle of a cheap roll.
YouTube has tons of videos from all over about 3d printing.
Regards