Table Data Appears For Only A Second?

Link to test case: https://ahafhandwriting.org/connect/members/
Debugger code (debug.datatables.net): https://debug.datatables.net/awecur
Error messages shown: None
Description of problem: Table data appears for only a second on the test case page with 205 rows. Data appears permanently in a table with only 4 rows (http://ridgeline.temp.domains/~ahaf/connect/members/).
Suggestions?
THANKS!