Template Packs Stuck Downloading

Several of my template packs randomly started downloading template updates but now they do not stop downloading. Some have been downloading for months but no progress is made and I cannot use the packs. I have tried offloading my packs and re-installing them but they still are stuck on download. I even tried offloading the MC PE app, but that didn't work either. This has happened to a number of my packs, and I suspect it happens when the pack creators give them updates because several of my packs like this say they are downloading an update.