The methods at NCBI here explain how to extract/download genome fasta and related datasets: https://www.ncbi.nlm.nih.gov/genome/doc/ftpfaq/
Are you certain that the downloaded datasets were complete and intact before loading to Galaxy? I would suggest uncompressing them locally on your computer to test that out.
Use FTP to upload to Galaxy: https://galaxyproject.org/ftp-upload/. Compressed .gz data should load without problems from this source, however, you could always upload the uncompressed version. But this should not really be necessary if the data is complete/intact.
I also noticed that you had some SRA formatted data loaded. When using the tool Get Data: EBI SRA, choose the link(s) under the table header "FASTQ files (Galaxy)" to import the data instead of the SRA formatted data under the header "NCBI SRA file (Galaxy)": https://galaxyproject.org/support/loading-data/
The FAQs for fastq data preparation/reformatting (as needed) are the first few links here: https://galaxyproject.org/support/#getting-inputs-right
Hope that helps but let us know if you continue to have problems! Jen, Galaxy team