What PC operating system do you use ?
.
On the other hand,
You may want to test the /e/ build for the LTE model on your wifi only model : [UNOFFICIAL BUILD][N] Samsung Galaxy Tab A 7.0 LTE - SM-T285 (gtexslte)
By modifying meta-data of e-0.18-n-20210927-UNOFFICIAL-gtexslte.zip
from here