I checked your form and the email notification was missing a sender's name. This can make email providers block the emails for taking it as spam.
I also checked and your email was in our bounce list:
Reason(s) : smtp;554-5.2.2 mailbox full
554 5.2.2 STOREDRV.Deliver.Exception:QuotaExceededException.MapiExceptionShutoffQuotaExceeded; Failed to process message due to a permanent exception with message Cannot open mailbox /o=HostedExchange/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=EXCH2-MBX01/cn=Microsoft System Attendant. 16.55847:BE000000, 17.43559:0000000068010000000000000000000000000000, 255.23226:A10D0000, 255.27962:FE000000, 255.17082:DD040000, 0.26937:00000000, 4.21921:DD040000, 255.27962:FA000000, 255.1494:00000000, 255.26426:FE000000, 0.22086:0F010480, 0.25876:0F010480, 4.7588:0F010480, 0.25840:0F010480, 4.6564:0F010480, 2.31229:00000000, 0.22086:0F010480, 0.56333:03005940, 4.6372:05000780, 0.24916:0F010480, 4.6276:05000780, 4.23921:EC030000, 6.21970:0F01048040000C680F010480, 4.23921:EC030000, 6.21970:0F01048000806F670F010480, 4.24305:0F010480, 4.5721:DD040000, 4.6489:DD040000, 0.34743:0F010480, 4.2199:DD040000, 0.56415:0F010480, 4.48223:DD040000, 4.17097:DD040000,
4.8620:
DD040000, 255.1750:00000000, 0.26849:0F010480, 255.21817:DD040000, 0.26297:0F010480, 4.16585:DD040000, 0.32441:00000000, 4.1706:DD040000, 0.24761:00000000, 4.20665:DD040000, 0.25785:2D000000, 4.29881:DD040000
I removed it and made a test submission. Can you please confirm me if you received it? Let us know if you need more assistance.